dstwo have lot of plugin (the most important is gba emulation) , SC at this time already support DSi mode on dstwo (not to the public ) they need to make actual firmware more stable. rumor !!??? Build cartridge quality in dstwo is best than ievo I write this because at this time using dstwo and loving it (playing old gba game on 3ds, a little slow but they work. ) edit: i think ievo is a litle faster running ds game !!