[QUAD-L] Quantum Powerchairs

[Don Price]

 
Does anyone have a Quantum powerchair?
 
After YEARS with a Quickie I'm looking at the rear-wheel drive Quantum model, 
something like the Rival.
http://www.pridemobility.com/quantum/powerbases/rearwheel/rival.asp
 
I'd love to hear your opinions, good or bad, about these chairs.
 
Thanks!
Don.