@NovaSquirrel We have a supercard dstwo and have had zero issues with it, if you can find one of those
well, one minor issue: it fits into the ds pretty tightly due to being a fraction of a millimeter thicker than a standard ds game card (in order to fit an on-card coprocessor used to run emulators, so you can use one flashcart for both ds and gba games (and others too))
-F
@Felthry I remember seeing those when they had just come out and thinking they were really cool. They still look really cool, but they do seem to be pretty expensive now.