My noob two cents here. I would pick a few bikes from each of the brands mentioned above (Specialized, Cannondale, Trek, Giant, etc.) and have both you and your wife ride them. I found ebikes to be quite different from standard bikes and in fact from each other based on motor type and power, drive trains, controllers, etc. I really didn’t know what I wanted until I rode quite a few. I bought a bike after riding 15 different ones. Good hunting and keep us posted.