PlayStation emulation is pretty good based on what I've played so far - the main issues I've encountered lie in playing back Redbook audio tracks in the games that have them, primarily (in my experience) in "Tomb Raider" and "Rayman." These are using EBOOTS made from rips of my own game discs, at least; I'm not sure if there'd be a significant difference if you used the PlayStation Store version of the games or not.
palmertech wrote:PS1 emulation is near perfect, but the screen size is small if you do not stretch it, and it looks horrible if you do.
I disagree. In fact, I much prefer to have the video stretched to full screen. Sure, the aspect ratio is messed up, but other than that, I think it looks just fine. Far better than that itty-bitty square in the center of the screen, at least.
Also, Genesis/MegaDrive emulation is nearly flawless so far. PicoDrive is fantastic! 60 FPS in pretty much every game I've played so far - even Sega CD games! Master System emulation is great so far, too, though I've only tried one game.
SNES is a bit lame, in my opinion, but perhaps I haven't hit upon the right configuration.
Saturn emulation (yes, there
is a Saturn emulator for the PSP!) is basically worthless. Haven't tried Dreamcast emulation, but since I've got a 1001, I don't know if it'd work anyways.