I am going to buy one of those cards but I cannot decide. I have searched around for common questions just like this but most if not all of the posts I came across were 2+ years old. I am mainly looking for the key differences between each card or features exclusive to each card. I know that the M3 can play GBA Games with an adapter and the CycloDS cannot. On the other hand I read that the CycloDS has a much faster UI and for the most part rock solid. Price is irrelevant, I want my DS to do the MOST IT CAN DO! Any input is appreciated. I don't ever post in the forum here but I use your downloads section quite a bit. Admin, I thank you for this awesome site.