I'd be interested to know how Animal Crossing/Doubustsu no Mori does on the M3Simpy. I don't mean whether it runs or not, but how well it runs. For instance, I have a SCLite and a SCDS ... both of them run Animal Crossing just "ok," but the SCDS takes an extra 2 seconds of load time longer than the SCLite each time you leave an indoor space and walk back outside. A little annoying, but not a deal killer. All other games, including the infamous Castlevania vid, are running 100% on SCDS.
People seem to have a misconception about the SCDS that it requires frequent changing of settings, but for me once I got things sorted out, I haven't needed to change anything. But I'll probably end up buying some other Slot1 card later on when they get all sorted out - I'm pretty sure what's on sale now will only turn out to be the first generation of Slot1 cards.