I've got an EZ3 USX (the new USS one). Admittedly, I've only had it for a couple of weeks (it's my first recumbent), and the only problem, per se, was that the front derailleur needed adjustment (wasn't quite making the big chainring) but that was most likely just cable stretch. The Wellgo pedals it comes with are crap, so I swapped over the Sakae pedals from my GT Karakoram K2 (which is now for sale, and I'll knock off a few bucks for the cheap pedals (-
. Still getting my recumbent legs, so it doesn't have a whole lot of miles on it yet, but for a low end (at least as far as 'bents go) bike, it seems pretty well put together.