We will compare Shark NV70 and NV360, and list the difference to help you make a better choice.
NV70 vs NV360
images from manufacturer

The major difference between the Shark NV70 and NV360 is the Lift-Away design.
The Shark Navigator Lift Away Deluxe NV360 is equipped with a portable lift away canister that allows you to remove the pod from the floor nozzle and carry it around your house to vacuum. While the Shark Navigator DLX NV70 does not have the detachable lift away design, you can only use it as an upright.

Handle Design:
The handle on the NV360 is detachable when you use it to do above floor cleaning while the handle on the NV70 is fixed and does not attach to the accessories.

Included Tools:
The NV70 comes with a 5.5″ Crevice Tool, 16″ Crevice Tool, Dusting Brush, and Pet Hair Power Brush.
While the NV360 includes a Pet Turbo brush, dusting brush, crevice tool and a Appliance Wand to pick up dust from underneath appliances.(Some packages may not mention the Appliance Wand, so please contact the seller to make sure if it is included before ordering.)

This appliance wand image was taken from the NV360 manual.

Color:
The NV70 is gold while the NV360 is blue.

Cost:
The NV360 is more expensive.

Some similarities:
power: 10 amps, 1200 watts;
they are bagless;
sealed system with HEPA filtration;
motorized brushroll that can be turned on/off for use on both carpeted surface and hard floors;
swivel steering for easy maneuvering;
limited 5-year warranty.

Below are the official manual download links, you can learn more by reading the manual.
Shark NV70 manual: www.sharkclean.com/manual/NV70_26_IB_E_130228_1.pdf
Shark NV360 manual: www.sharkclean.com/manual/NV360_26_IB_E_121119_1.pdf