Best SNES emulator for the NDS?

[ndsplayer19576]

I surfed around the web for one, I found one in about 5mins then I couldn't be bothered after that. Don't remember what it's called

I'm using an R4i-SDHC 3DS (from China since I found it in a shop) with firmware for 3DS 4.2.0-9 X and DSi 1.xx (don't remember I saw it a long time ago)

For compatibility's sake I'm trying to play Super Mario RPG [NTSC-U].

EDIT: I'm planning to use it for my 3DS with the same firmware it supports.