Which PS1 Emulator is Suitable for Game Devopment?

[Nero1024]

I'd hate to necropost an old thread (my own of all things) but I've managed to discover the No$PSX which has some neat debugging features and a nifty VRAM viewer (albeit w/ no palette control from what I've seen). This emu seems promising for homebrewers.

http://nocash.emubase.de/psx.htm