I'm just wondering what the best emulators are currently for NES, SNES, GBC, GBA, and SEGA. I have the Axim X5 Advance, which I know is an older device, so I'm trying to get the best optimized emulators out there. I'd be interested to hear what people are using right now for these 5 systems.

I've been using Morphgear, but I've heard there are other ones out that are faster (especially with sound). Any suggestions would be greatly appreciated! Thanks everyone!

L8er
Rhuarc

MG sucks in almost every respect, as far as optimization is concerned.

NES: PocketNester is your choice
GBA: PocketGBA

Microsoft MVP - Mobile Devices, 2006, 2007. See my PPC & SP blog HERE.

    

Sadly true, as MG has such a good interface and file handling. Wish there was an easy way for people to support it with new modules based on the best emulators. Especially gutted as I supported it from the very earliest days when it was pocketGB, buying the modules for GBC and GG/MS.

Anyhow, there are so many variants of pocketsnes it will make your eyes water, but it may be worth looking at Masterall's version as I believe it is quite fast on smartphones and handles QVGA. It is very fast on my Loox 720, but only occupies 1/4 of the screen, even using Picard's GAPI tweak. Masterall has also done a new version of Picodrive for MD emulation (http://www.modaco.com/index.php?showtopic=237281&st=0) which again is very fast but doesn't fill a VGA screen. I use mobiledrive for MD.

I think GG/MS are handled fine in Morphgear, as are GB/GBC.

For NES and GBA I would also back up Menneisyys' recommendations