Before this start a flame war I am not looking for a specific emulator so dont tell me to search google.

I want to know your personal experiances with windows emulators and which you guys/girls like the best. Google wont tell me peoples personal experiance that is why I ask you guys/girls.
BTW. I am running Mandrake 8.2 with 680MB mem., 30 gig harddrive, 600 Athlon.