I've put a lot of miles on this urban warrior in San Diego and Las Vegas. It conquered many-a-hill, and has fought off a constant barrage of devastating pot holes. I put on fenders, lights, rear rack, phone holder, rear bags, new seat, and swapped in a carbon fiber handlebar. It's fast and the battery can last 20-40 miles, depending on had badly you spank it. I removed the soft top-speed limiter and have had this cruising at 32 mph countless times (handy when late for work...). Brakes are great and the tires are, overall, very good (but not great in the wet). The only complaint is the frame is not as rigid as it could be, and it can get the wobbles from the just-right combination of circumstances. Net? It's been totally reliable, is fast, easy to use, and is comfortable to ride!