I've had an R4 for quite a while now and use a 1gb microSD with it. I'm always trying new games however and jump from game-to-game very frequently and would like to be able to have a bigger amount of storage to work with. I think I read that it can use up to a 4gb microSD, albeit unstable at times. I read about cycloDS being able to use SDHC which can use much larger storage capacities of 4gb and 8gb. I don't know much about the stability or performance of the card with that type of storage however, and am also wondering if there are any other slot-1 cards I should know about that can offer a good amount of storage. I'm looking at something in the 4gb and 8gb range. I really like the features of the R4 and am not really looking for anything additional beyond what it offers, and am just looking for a card that will have an upgrade in storage.