According to Oreck support, the difference between Magnesium LW100 and LW100LR is the warranty and annual tuneup. The LW100 carries a 7 year warranty versus 5 year on the LW100LR, and the LW100 has 3 yearly tuneups versus no tuneups on the LW100LR
Otherwise, they are exactly the same, have no mechanical difference.

There are some big difference between Oreck Magnesium and Touch that you would like to know before making a purchase.

1, Dirt Collecting Type
The Magnesium is bagged while the Touch is bagless.
Commonly, emptying a dust container is more messier than changing a bag. So, a bagged one is better for asthma and allergy sufferers

2, Brush On/Off and Speed Setting
The Magnesium has 2 speed settings but the brush is always on.
While the Touch has only 1 speed with brush On/Off switch.
According to user experience, the spinning brush is safe for laminate, vinyl, hardwood floors. But if you are afraid of the risk of scratching your hard floors with the non-stop spinning brush on Magnesium, then buy the Touch.

3, Included Tools
The Magnesium does NOT include any attachments for above floor cleaning, whereas the Touch comes with Cleaning Wand, Hose, Crevice Tool, Upholstery/Dusting Brush, Stair Tool and Accessories Bag.

4, Weight
This is another big difference. The Magnesium is about 9 pounds lighter. If you need to carry the vacuum up and down stairs to clean your house regularly, then this is a concern.
The Magnesium weighs approximately 7.7 lbs without cord whereas the Touch weighs 16.8 pounds without cord.

According to user reviews, the Touch picks up pet hair better than the Magnesium.
More details, read the comparison table below.

Compare Oreck Magnesium RS, SP with Touch

	Oreck Magnesium SP LW100 Bagged Upright Vacuum Cleaner Spec	Oreck Touch Upright Bagless BU10000 Specs	Oreck Magnesium RS LW1500RS Bagged Upright Vacuum Cleaner Specs
Brand	Oreck	Oreck	Oreck
Model	LW100	BU10000	LW1500RS
Design	Upright	Upright	Upright
Dirt Collection	Bag	Dust Cup	Bag
Full Indicator	No	No	No
On/Off Switch Location	on the back of the vacuum	on the handle	on the handle
Power Source	Corded	Corded	Corded
Cord Length	30 feet	30 feet	30 feet
Auto Cord Rewind	No	No	No
Motorized Brushroll	Yes	Yes	Yes
Brushroll Shutoff	No	Yes	No
Speed Settings	2	1	2
Roller Speed	7,000 revolutions per minute on high speed		7,000 revolutions per minute on high speed
Weight	about 7.7 pounds without cord	about 16.8 pounds without cord	about 7.7 pounds without cord
Height Adjustment	no manual setting	self adjust no manual setting	no manual setting
Nozzle Width	about 12''	about 12"	about 12''
HEPA Filtration	Yes	Yes	Yes
Headlights	Yes LED Headlight	Yes LED Headlight	Yes LED Headlight
Attachments	No	crevice tool, upholstery/dusting brush, stair tool and accessory bag	No
Edge Brush	No	No	Yes
Self-propelled	No	No	No
Handle	Easy-fit Handle		Easy-fit Handle
Swivel Steering	No	Yes	Yes
Suction Control	No	No	No
Color	Black with Blue	Multi Color	Black with Blue
Dimensions	47.5'' H x 12'' W x 10.5'' D	45”H x 12”W x 12.5”D	47.75'' H x 12'' W x 10.5'' D
CRI Seal of Approval	Gold Level	Silver Level	Silver Level
Manual	Manual Download Link from Official Site	User Guide	Manual Download Link from Official Site
Tuneups	3 tune-ups	1 tune-up	5 tune-ups
Warranty	7-year limited warranty	5 year limited warranty	7-year limited warranty

All of them are upright models, bagged, and corded. The Oreck XL Insight is heavier, has smaller wheels, carries shorter warranty, and is the cheapest one.

Compare Oreck Magnesium RS, SP with Insight U7010ECS specs

	Oreck Insight Vacuum Cleaner U7010ECS Specs	Oreck Magnesium SP LW100 Bagged Upright Vacuum Cleaner Specs	Oreck Magnesium RS LW1500RS Bagged Upright Vacuum Cleaner Specs
Brand	Oreck	Oreck	Oreck
Model	U7010ECS	LW100	LW1500RS
Design	Upright	Upright	Upright
Dirt Collection	Bag	Bag	Bag
Full Indicator	No	No	No
On/Off Switch Location	on the handle	on the back of the vacuum	on the handle
Power Source	Corded	Corded	Corded
Cord Length	30 feet	30 feet	30 feet
Auto Cord Rewind	No	No	No
Motorized Brushroll	Yes	Yes	Yes
Brushroll Shutoff	No	No	No
Speed Settings	2	2	2
Roller Speed	6,500 revolutions per minute on high speed	7,000 revolutions per minute on high speed	7,000 revolutions per minute on high speed
Weight	about 9 pounds without cord	about 7.7 pounds without cord	about 7.7 pounds without cord
Height Adjustment	no manual setting	no manual setting	no manual setting
Nozzle Width	about 13"	about 12''	about 12''
HEPA Filtration	Yes	Yes	Yes
Headlights	Yes	Yes LED	Yes LED
Attachments	No	No	No
Side Brush	Yes	No	Yes
Self-propelled	No	No	No
Handle	Comfort-fit handle	Easy-fit Handle	Easy-fit Handle
Swivel Steering	No	No	Yes
Suction Control	No	No	No
Color	Multi Color	Black with Blue	Black with Blue
Price		$399.99 on oreck.com on November 12, 2014	$599.99 on oreck.com on November 12, 2014
Dimensions	48' H x 13'' W x 9.5'' D	47.5'' H x 12'' W x 10.5'' D	47.75'' H x 12'' W x 10.5'' D
Manual		Manual Download Link from Official Site	Manual Download Link from Official Site
Tuneups		3 tune-ups	5 tune-ups
Warranty	5 year limited warranty	7-year limited warranty	7-year limited warranty
CRI Seal of Approval		Gold Level	Silver Level

All of these Oreck bagged upright vacuum cleaners are lightweight, they have motorized brush roller, but the brush roller cannot be shut off, and all of them come with NO attachments.
They also have some difference.
The On/Off design is different as well as the the locations. The Magnesium RS and Graphite have the control on the handle, while the Magnesium SP has the control button on the back.
The Magnesium RS has the swivel design that the Magnesium SP and Graphite do not feature.
The wheels on the Magnesium is larger than the ones on the Graphite.
The Magnesium RS is the most expensive one while the Magnesium SP is the cheapest one.
And there are also some difference on the color, weight, dimension, handle design, warranty, and tuneup. Read the table below to get more details, then buy the one that better suits your needs.

Compare Oreck Magnesium RS, SP with Graphite U4300H2BS

	Oreck Magnesium SP LW100 Bagged Upright Vacuum Cleaner	Oreck Magnesium RS LW1500RS Bagged Upright Vacuum Cleaner	Oreck Graphite U4300H2BS Bagged Upright Vacuum Cleaner
Brand	Oreck	Oreck	Oreck
Model	LW100	LW1500RS	U4300H2BS
Design	Upright	Upright	Upright
Dirt Collection	Bag	Bag	Bag
Full Indicator	No	No	No
On/Off Switch Location	on the back of the vacuum	on the handle	on the handle
Power Source	Corded	Corded	Corded
Cord Length	30 feet	30 feet	30 feet
Auto Cord Rewind	No	No	No
Motorized Brushroll	Yes	Yes	Yes
Brushroll Shutoff	No	No	No
Speed Settings	2	2	2
Roller Speed	7,000 revolutions per minute on high speed	7,000 revolutions per minute on high speed	5,600 revolutions per minute on high speed
Weight	about 7.7 pounds without cord	about 7.7 pounds without cord	about 9 pounds without cord
Height Adjustment	no manual setting	no manual setting	no manual setting
Nozzle Width	about 12''	about 12''	about 12.5"
HEPA Filtration	Yes	Yes	Yes
Headlights	Yes LED	Yes LED	Yes Incandescent
Attachments	No	No	No
Edge Brush	No	Yes	Yes
Self-propelled	No	No	No
Handle	Easy-fit Handle	Easy-fit Handle	Helping Hand Handle
Swivel Steering	No	Yes	No
Suction Control	No	No	No
Color	Black with Blue	Black with Blue	Black with Silver
Dimensions	47.5'' H x 12'' W x 10.5'' D	47.75'' H x 12'' W x 10.5'' D	47'' H x 12.5'' W x 9'' D
Manual	Manual Download Link from Official Site	Manual Download Link from Official Site	User Guide
Tuneups	3 tune-ups	5 tune-ups	1 tune-ups
Warranty	7-year limited warranty	7-year limited warranty	6 year limited warranty
CRI Seal of Approval	Gold Level	Silver Level	Silver Level

Please reply below to share your reviews on Oreck Graphite, Magnesium RS, SP if you own these vacuum cleaners or know other difference between them.