There is a lot to like about the Swytch kit. It was relatively easy to fit even though I did have to do some filing down of the wheel to get it to fit. When it works it all works great and it certainly encourages me to use my bike more often. The main issues are that because of the hills where I live I don't get anywhere near the maximum distance out of the batters. I should have got the larger one even though none of my journeys are longer that the rated distance for the smaller battery. Also, it is very easy to dislodge the sensor disk that goes around the pedal. Because of the design of the pedal the disk does not fit very well and is easily knocked out of placement meaning that power surges on and off as the pedal is turned or there is no power at all. Having said all that, I have just ordered one of the long distance GoGo battery packs which should help with my distance issue.