OK there's the TTDS, Cyclo DS, SCDS ONE and M3 Real oh and the AceKard. I have an R4 that I might be giving to my brother but I'm not sure which card to get a replacement.
SCDS ONE looks pretty solid - better features than Cyclo?
TTDS. What does that have to offer which the other don't?
M3 Real. ^^
AceKard has open source but no one is bothering with it?
Too many cards to choose from!
Oh and btw, the main reason I'm willing to part with my R4 is because it does not SDHC support.