I have the Nueton. The design firm I work at created it (ID design / Branding).
I have a 1/4 acre yard, and the battery life can easily make it 40 minutes.
Also, Consumer Reports this month has a write up on mowers.
http://www.neutonpower.com/TwoStepMo...age=CEM6Models
Pros:
Easily adjusted
Light
Quiet
Powerful
It was free
Cons:
Not self-propelled (man up)
Battery is only good for 1/3 acre
Neighbors think you're a hippy.
Good luck.