I'm a 53 year old wanting to get back into bike riding - mainly for enjoyment with my kids and husband mostly on paved rails-to-trails, around the neighborhood, for light exercise, while out camping with the family, etc. I had a bad fall a few years ago on my Trek Mtn Track 830 and have also put on a few pounds, the knees and back are now aching, and find it hard to mount/dismount. So I'm looking for a low-mount step-thru type Woman's bike.

I plan to visit our LBS but want to come prepared. I'm looking at the Trek Pure and the Trek Shift Comfort line (maybe the Verve?) - and the Electra Townie - but are there any other brands/models in the $400-$500 price range that compare? Does anyone know the difference between the Trek Pure and Shift models and/or own either? Thanks in advance!