Very pleased with my Swytch kit. I have the hi-power option but keep it restricted to 25km/h limit on the road. Good points: its powerful, reasonably quiet (although I'm hard of hearing so not best judge of that), easy to fit, very reasonably priced and very cheap entry into the e-bike revolution. Good quality for the money. Range is good but more like 30 miles than 50 miles on a full charge, but I imagine that's down to being the hi-power kit. On the standard one, I expect the range would be closer to 50 miles. Bad points: 50 mile Battery and hub motor (bigger than standard) are quite heavy, and battery does impact on the steering, so would be interested in forthcoming new smaller, Eco battery. Motor makes an occasional grinding noise that I hope is not an indication of a pending fault or breakdown but hasn't gotten any worse since it started.