R4's main problem is that it's no longer being "officially" updated. If you ever want to get a newer flashcart that still is being supported with new firmware and stuff, go with a CycloDS. A little expensive, but well worth it. I love mine, and if you get a EZ Flash V 3 in 1, you can play GBA games without having to prepatch them. the Cyclo is $47 shipped from realhotstuff.com and they ship FAST!