The SNES emulators for the DS are much better than the ones for the GBA. SNES DS uses the SNES Advance engine, while SnezziDS uses the Snezziboy engine, both of them improved with the DS's upgraded hardware. SNEmulDS uses SnezziDS's main core, or at least it did at one point.

You can try SNES Advance and Snezziboy if you'd like, but prepare to be somewhat disappointed.

 

Enjoy GBA SNES emulators then. They have no sound at all.
Snezziboy does a decent job at scaling the screen, Snesadvance crops the screen at the edges to fit it in.
Chrono Trigger plays better on GBA SNES emulators than on SNEmulDS? I don't think so.

 

Hey now, there were a good number of games that were fully playable on the GBA if you could tolerate some slowdown. I was content with it for a year or two until I got a DS.

Also, test84, are you sure speedhacks were applied? With SNES Advance, an asterisk (*) appears next to games with SuperDAT entries, while with Snezziboy you'll see patches being applied in the command box.

 

The latest version of SNEmulDS is very good indeed. It has support for RAM expansions; using that, I have experienced no slowdown at all on any of the games I've tried with it. It also has the option for Snezziboy-style scaling. And a much improved interface.

This doesn't mean that compatability is good, of course. The layering remains awful, and a few games still just don't work. Still, it's much much better than it was before, and better than any other SNES emulator for the DS or GBA that I've tried.

And, um. The OP mentioned playing "Front Mission" on the DS; assuming you didn't just mean Gun Hazard... you do know that there's an official DS version of the original Front Mission out for the DS in English now, don't you? With stylus support and an optional second route through the game?

 

SNEmulDS works better than most GBA SNES emulators, I believe.