I've had mine for about four or five months. It rides a little rough but I found that a pair of gel gloves takes the edge off. The only other complaint is the bottom bracket recently developed a ticking noise that my local LBS is currently investigating. Other than those two issues, the bike has been great. I actually find the shifting to be quite smooth but the dérailleurs on my other bikes have all been lower quality so I don't really have a reference. It is definitely quick and light. The 110 PSI 32mm Bontrager tires rock. Oh, the stock saddle is really uncomfortable. I replaced mine with a Brooks.