So far, so good. Upgraded from previous Schwinn, which I liked, but the design of the head unit made it constantly wobble in use. Not an issue with this bike, which is generally lower to the ground/better designed. Smooth pedal action, good electronics, many many options. The bluetooth and wireless heart monitor features worked for me right out of the box, no issues. My one gripe is that, as others have noted, the seat structure does wobble a bit under heavy cranking. Probably not a quality control issue, but a little annoying. I suspect I'll get used to it. Would I buy it again? Probably, but I'd also look at the 618 model to see if it has a beefier seat structure, as I'd pay a bit more to eliminate that issue. Overall, though, I consider this bike to be a tremendous value as a home-exercise machine. Looks great, performs well, at least in the early stages of use. Two other notes: I'm 6'2'', and while inseam length is a more important indicator (i'm about a 32), I have sufficient legroom, with about 2" more available). And if you place a device on the mid-console tray and cover up the upper lefthand corner of the console, the wireless heart monitor might not register. Just move it over a bit.