I test rode a Trek Conduit ebike today and I'm very Impressed. It has a light aluminium frame (jsut 44.71 pounds) and pedal assist only. The pedal assite is very fast to respond. It is powered by a 250 Watt Shimano STEPS mid drive. Overall a very smooth and quiet ride. It produces 500 Watt peak when under load and is very efficient. You can also gear it down with an optional smaller chain ring for more power up hills.