I've had an R4, an M3 Real, and a CycloDS. The CycloDS is probably the best cart out there. Aside from their site being down from the bandwidth (that does say something about how much people check them out) they're way quick on updates. And the card holds up well. The M3 Real I had I gave to my brother, with the Sakura FW. The M3DS Real FW sucks, everyone's gotta agree on that one. So, my 2 cents, CycloDS. And consolesource.com has em for a decent price. Just get your hands on an EZ Flash V 3-in-1 and you're really good to go!