I would suggest you look at the Lightfoot line of recumbent. Thru the years I have purchased 3. I still own 2 and my son has the 3rd. I love the bikes. Very comfortable.
You may want to consider a Bionx electric assist. It has an adjustable assist level. Using level 1 you can hardly feel it and ride well over 50 miles with the new 48 volt unit. Or for shorter rides turn the assist level up and go easier on your back.
http://www.lightfootcycles.com/trikes.htm
http://www.bionx.ca/en/
Last edited by 15rms; 05-20-11 at 05:27 PM.
Reason: poor grammer