I'm a senior with some mobility issues (mostly to do with balance). E trikes recommended to me. Haven't ridden a bike in a long time. I've been researching & found 2 above trikes. Both seem good with some drawbacks. I'm particularly concerned about old fashioned battery on EW29, and lack of a back on seat on Sun 24. I'd appreciate feedback about these 2 E-trikes from anyone with experience with them (all info useful). And I'd appreciate any recommendations of/pointers about selection of, other affordable E-trikes. I live in urban area with some hills & won't be using trike for off-road. Mostly I want to be able to get around my local area to shop, go to appointments nearby, meet friends, go to library, etc.