which is the best emulator for DS

No$Gba, iDeaS. In that order.

No$gba, iDeaS, then NeonDS. Yeah, in that order.

Don't forget Desmume!! But yeah, the best one actually is no$gba

No$gba, No$gba, No$gba, No$gba, No$gba, No$gba and No$gba.

With no doubt, No$GBA.

No$GBA is great, but some games will fail that run perfectly on iDeaS, so don't just sit around with a single emulator passing along ROMs that fail on it - atleast 2 or 3 will work better.

Also to note, with No$GBA, you have to set the save type yourself. The author has not added autodetection yet, but i'm pretty sure its only because its not really all that important. Though some games will fail to boot with the wrong SRAM, Your better off just using a utility of some sort in order to detect the save type. If your like me and backup your ROMs via FTP/SD from your DS, then it will tell you the save type and you can even backup your SRAM data over FTP/to SD too (Infact, its the first thing you backup on the utility I use to backup games)

No$gba rules! I am using three emulators: No$gba, iDeaS, Neonds. All are the latest versions I have. No$gba have a higher compabilities and I almost finish Castlevania Dawn of Sorrow with no graphic errors and nice SPEED, amazing!!!!

The only problem with No$GBA actually is speed unless you have a good configuration but it's the most compatible so far.

Actually, In no$GBA Most games run smoother and with less spiking/lengths of slowdowns than iDeaS for me. It makes certain games feel more playable...

Too bad about the missing sprites problem... Makes one of my favorite games unplayable...

Well... no DS emulator works perfectly, but No$GBA has the highest compatability rate...