The factory-pre-sets are awful, so if you're willing to blow the cash on pro-calibration, I'd definetly recommend it. It has it's downsides; universal remotes won't work on it, slow boot time, slow tuner changing, tuner isn't very good at "locking on" to digital channels, TV speakers don't cut off when you plug it into a stereo, requiring turning it down to zero, it only has one HDMI input, it's 4:3, and the menu stays up too long (unless you push the button to make it go away), but otherwise it's a GREAT set, particuarly if you got it for $270, like me on Black Friday. When I had it calibrated, the geometry was already perfect out of the box, and the calibrator told me that it was better picture wise than some Sonys.
Anyway, my understanding that most sets that go bad will do so in the first 100 hours or so. I've probably run mine for 200 hours, and it's perfectly fine. Worst problem I've had was one time it didn't boot up when I pushed the button, so I had to unplug it and push it again. I've had to do that 3-4 times with my Toshiba HD-DVD player, so a cheap TV is doing better than a name-brand DVD player. Go figure.
ETA: The poster two posts up is wrong about the manufacturer. A quick google search shows it was made by Konka (or whoever it's spelled), as shown by an official press release.