NONE. There is not one PS2 emu that can fully emulate a game. You can get part of the game loaded and run at very, very slow speed but your not going to get to far.
PCSX2 is the most advanced.
-Black Onyx DS-Lite: R4 and 1GB Kingston Micro-SD
-Wii: Currently playing Zelda: TP
-PS2: Slim v12 & DMS4Lite
-GC: Unmodded (Had every game I wanted before a worthy solution was out)
-xBOX: The only game I liked was Halo and I have that on PC
-Antiques: GBA, PS1 & Stealth Mod, N64, GBC & GB