I bought a 600. Assembly was pretty straight forward with the instruction video on Priority’s website. The bike rides well. It shifts very smooth (pinion gearbox is fantastic) and the belt is super quiet (when it is clean). My gripes: * the front wheel was already slightly out of true from the moment it came out of the box. Maybe slight damage from shipping? I haven’t bothered to fix it yet. * the fenders, especially the front, are difficult to adjust to exactly the right position so that they don’t rattle and rub the tires at the slightest bump. After a lot of trial and error I think I’ve got them dialed in about as good as they can be, but they still rattle and rub on some bumps. The fenders need improvement or maybe the 50mm tires are too wide for them. * the bike as shipped was missing a little c-clip for holding the front brake line to the fork. I asked Priority about it and they shipped me a few (thanks!) * the belt squeaks like crazy when it gets certain types of dust on it. This is my first belt drive bike so I wasn’t sure what to expect besides the quiet, maintenance-free experience that is advertised. I have to periodically clean the belt and then put silicone lube on it to keep it from squeaking. This is better than dealing with a chain IMO, but not as carefree as advertised. * recently one of my pedals has started to squeak. I guess maybe some dust/dirt has worked its way in. I’ll probably have to take the pedal off and clean/grease it. Not a huge deal but a bit annoying. I ride a lot of dirt/gravel trails, but my other bikes have never had this problem with the same treatment and a lot more miles.