images from Shark official site

These two Shark vacuum series are similar, they have similar features, specifications, pros, cons. The biggest difference is the brushroll design. The Shark Apex DuoClean with Zero-M Stick Vac ZS360/ZS362 feature the DuoClean technology that the Shark Rocket Zero-M Ultralight Corded Stick Vacuum ZS352/ZS351/ZS350/HV345 does not have.
The DuoClean technology has two brush rollers inside the floor nozzle: besides the bristle brushroll, there is an additional soft roller at the fore to tackle stuck-on dust and large particles on both carpets and hard floors.

Since the Apex DuoClean have 2 rollers, you have dual rollers to clean. The good thing is the brushroll garage cover is on the top of nozzle,and you just need to slide 2 release button to open it. The bristle brushroll is not detachable while the soft roller can be removed to clean.
On the other side, the Rocket Zero-M has only the bristle brushroll to clean,but the brush cover is at the bottom of the nozzle, and you have to unscrew 3 screws to open it and clean the brushroll which is also not removable.

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Another difference is the motor:
The Apex DuoClean with Zero-M has a 600 watt, 5 amp motor whereas the Rocket Zero-M has a 500 Watt, 4.2 Amp motor

Similar features and facts you may want to know:

They do NOT stand by themselves.
Just like most stick vacuum cleaners on the market, they don’t have the ability to stand by their own. So, when you want to stop to do anything else, such as changing outlets, taking a break, answering a phone call, you have to lay it down. Hate this? Have a look at the Shark Apex Uplight which is a corded stick vacuum that stands on its own

Both Feature Zero-M Technology

Does the brushroll really clean itself?
You will get conflicting answers from users, you can (#ad) read users reviews at Amazon here.

LED Headlights
They have led lights on both floor nozzle and handheld part. The lights do help vacuum dark spots and reveal hidden debris.

No HEPA Filter
For those who are looking for a slim vacuum with HEPA filtration, these are not your choices. You may want to take a look at the Shark Apex Uplight which has Anti-Allergen Complete Seal system with a HEPA Filter, it would be a better choice for asthma and allergy sufferers.

No Adjustable Suction Control
They do not allow users to adjust the suction power for different needs.

No Brushroll On/Off Control
They have 2 surface settings: Bare Floor/Small Area Rugs setting with the brushrolls spinning slowly and Carpet setting with brushrolls spinning faster.
The brush rollers keep rotating in both of the two modes when using the floor nozzle to vacuum.

2 in 1 design
They both can be used as a stick vacuum as well as a handheld vacuum. The floor nozzle can be attached to the handheld portion without the wand for more versatile cleaning.

Low Profile Nozzle
They can get underneath furniture with an approximate 5-inch clearance and higher.

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