So I already own an R4 clone, but I'm thinking of upgrading and getting the Supercard DSTwo. According to a friend of mine, this particular cart is one of the best ones on the market. The GBA emulator is appealing, because I won't have to get a slot-2 cart. So my question is: How good (or bad) is the GBA emulator? Does it run most games at the right speed, etc? Also, does this cart still receive firmware updates? My R4 clone can't play Bowser's Inside Story (kind of why I want a new cart lol), so I want to make sure this game runs on the DSTwo.