Since I didn't have a PSP I'll have to say the PS2. Granted there isn't anything worse about it than the PS1, and really a PS2 was like a great upgrade of the PS1, but it really did not add anything aside from DVD playback that wasn't a hassle. It added nothing more in terms of OS and while it could play 4 player games, it needed an accessory, same for online play, you had to buy an adapter. Memory cards were improved but they were still memory cards.
The controllers were better too....damn it now I don't think I should have said any PS system. I did spend a lot of time playing PS1 games on my PS2. I guess I really wished the PS2 was more of an improvement then it was but I guess I'm comparing it to my modded Xbox which isn't fair and the PS3 added so much functionality in the OS it was such an improvement outside of great looking games too.
Before the PS3 everyone was nice to me :(
