I've been using one at work for a little more than a month now (I'm a game tester), and I can't say that the build quality of the machine is very good. The buttons kinda stick if you press them down (especially the Square button) and the triggers feel a little shoddy. The analog nub is also a little weak and can break off kind of easily. The you can actually 'twist' the entire system, which is kinda strange. The screen itself, though, is awesome. We do have a few dead pixels on some of our units, but I guess LCDs will always have that chance. Some of my coworkers with bigger hands also seem to brush up on the power button when they use it, accidentally putting the thing into sleep mode or turning it off. Also, you can't see the volume increase and decrease outside of the PSP internal screens (I think the programmers might actually have to program it in), which is a little annoying as you have to hit 'Home' to bring up a screen to see what your volume level is at. To be fair, though, we do use these things 24/7, so our units are getting a lot more usage than regular consumer ones will, so that might be one of the reasons why ours are getting a bit shoddy. Other than that, though, the technology is solid and the thing really does have a lot of potential. I'm gonna wait and see if Sony releases a more sturdy version of it before I pick it up, though.