Most accurate emulators for each system? MESS included

[Juanie]

I'm looking to run old games accurately.

Also, I have an fat PS3, one of the 1st that came out. I hard these run PS2 games better than the slim ones. So would it be better to jailbreak it to run all my games?

[Mupen64 Man]

When you mean for each system, do you mean your consoles? So far I only have good knowledge on emulators for the PC.

[Juanie]

yep, I mean consoles