I prefer snes9x ex by Robert brogila aka explusalpha
Animaonline is a rip off copy of Yongzh
Explusalpha best for md (Sega cd ) but retroarch actually plays more Sega cd games
The rest all explusalpha
As for n64...
Nothing beats N64oid...to this day it has the best comparability and speed.
Get n64oid from slideme
I also have mupen64 but n64oid is best