I am quite new here, and taking the plunge after owning a cheap ebay electric bike for the last year. I have had some issues with my "El Cheapo" and after some advice I have decided to get a top end model. I have read many an old post here, and decided the both bikes have their pro's and cons. My use will be a bit of everything really, very hilly commute, total distance will be about 23 miles each day. I like the sound of the Panasonic system on the Kalkhoff, but the Wisper seems to have many a fan here. Are there any other models I should consider or are these the main 2?