The portability of the PSP makes it the most amazing PSX emulator out there. It may be "commercially made" but its hacked to allow us to put our own game collection onto our PSP's and enjoy them like we did so many years ago. It has made me pick up old games I haven't played in years. The lack of a second stick isn't much a problem in most games since most were made to work with just one in the PS1 era. The lack of shoulder buttons is slightly inconvenient for some games, but for the majority of games I have played, it works fine without them.