So basically just being in the slot not doing anything the R4i and DSTwo are basically the same. Does the DSTwo get hot in your experience like it does for the previous poster? Getting stuck in the slot is pretty bad, though! That's not happened with mine, but I never use mine in my 3DS. It stays in my DSi XL, which can't play GBA otherwise. I'm shocked that you get 14 hours of play time with an NDS game. That's almost like sleep mode. And the R4i is half that?