Apart from a super delayed delivery (9 months instead of 6) it is true that once you install it it's great! Generally speaking, the installation manual is good. I had to make a modification to place the sensor, because none of the alternatives proposed in the manual could work and the sensor must be really close to the magnetic disc... But it works perfectly and that is all that matters. Also I feel that I should have bought the big battery because the small one seems to be small for 13 km per day and the frequent use seems like it diminishes the battery's capacity. But that is not very easy to define because there might be other factors that influence the capacity. Proposals: I think that there should be something like an alarm to know when the battery is fully charged, not to overcharge it. Also it would be nice if for example, by pedaling in the opposite direction, the wheel could slow down by charging the battery just like hybrid cars. From what I have seen in the market I think it's the best thing so far. I hope that they will further improve it.