Just wanted to throw my 2 cents in here for anyone on the fence about this card. I have a DSLite, using a Kingston 8GB Class 4 MicroSD with the SCDS2. Every single game I've thrown at it has run prefectly. I'm just using whatever default settingst here are, and I'm not sure which of my roms are clean or not. I know I'm running DQIX and Kingdom Hearts clean, and they are smooth! Mario Kart, Mario 64, Chrono Trigger...doesn't matter what I toss in this bad boy, it works great. Played about an hour and a half straight last night on Lego Batman. No issues, and the save anywhere feature worked a charm. I'm sure it isn't perfect for everyone, but I really have to say, this has been simple and great! Drag and drop and play!