For those that haven't spent time with a PSP: Try it. It's seriously a great handheld with a lot of quality title diversity and even outside of modding, very solid PS1 support, though with modding, you go from PSN only PS1 games to every PS1 game.
Now is it the best console ever? Considering how ridiculously subjective that is, proven by this thread to this point alone, I won't even bother trying to answer. Let's just leave it at that it's a top notch handheld that is still somehow underrated despite selling 80m units worldwide while getting substantial first and third party support. The God of War games are still some of my favorite handheld titles, Ys 7 taught me how to love again, Kingdom Hearts: BBS was not only the best handheld KH, but one of the best KH games period, and more. It was a seriously solid handheld in so many ways, and hacking it just made it that much better.
For a long time, the PSP really was the go to emulation device for on-the-go as well considering how well it could handle so many retro systems. Even now, it is still one of the best price to performance devices out there for emulation that has built in controls.
And yes, I've owned a GBA, a DS, a PSP, a PSV, and a 3DS, and I easily rank the PSP at the top of the stack. For me, it goes:
1) PSP
2) DS
3) GBA
4) PSV (I love it, but just so much squandered potential)
5) 3DS
