I'm just looking for something of a decent price range that can run off the MicroSD I have with my R4. I found something http://www.realhotstuff.com/expansion-pack-p-194.html But I wasn't sure if that is the best. It looks good, very good actually. But can it run off my R4? Like can I put GBA games into the R4 and save them to there as well? Also, if it is the best one, is there anywhere with a better price?