I wish there was a breakdown for ratings. In any event, here's why I've given a 4 out of 5. I'm leaving out any of the negative aspects of buying in Canada. It makes the warranty process far more complex, but that's understandable for a smaller American company. Support is 6 stars out of 5. Seriously, the most prompt and helpful support. There were some issues with my bike when it showed up and they had replacement parts in the mail extremely quickly. They also took the time to answer all my questions about any concerns I had. Love it. The bike is very close to a 5 out of 5. Got the 600, and it's great. I can zip along on all sorts of terrain, hills, flats, gravel, no problem. It's well built and feels sturdy. It feels heavier than the traditional derailleur bike this replaced, but the shifting makes up for this. I feel I can start from a standstill far faster and shift upwards near seamlessly. The fenders are a real let down though. Comparing to the bike in the assembly video, clearly there has been a change of tires. A good thing for me, the ones I got have more grip and raised edges than the smooth ones in the video. This does mean, however, that the edge of the fenders come extremely close to the tire ridges. For the first long while and still now, slight bumps will cause the fender to hit the tire and vibrate like crazy for a short bit while it rubs up against the tire. I had to spend a significant amount of time adjusting the posts until it was giving enough clearance to not constantly happen. However I can certainly feel and hear it rubbing during rides. Very annoying. Despite all my adjustments and tightening, as well as a trip by the local bike shop, the fender attachment points rattle around a bit when I'm off pavement. Rough terrain makes the whole thing sound like it's going to fall into pieces at any moment. It won't, but not great to have that sound. I'd love to have the option for a sportier fender. The front can be replaced and I will quite soon. The rear, since the light is integral to it, will be more of a challenge. Let's hope it doesn't void my warranty if I do a little customization... This is really splitting hairs, though. I ride this bike hard, fast, and frankly a little dangerously. If you're commuting and riding at a reasonable pace you will not be let down by this purchase.