I have a CycloDS, at the time I got it it was one of the best... but support wavered. The last update was in 2011, there is no 3rd party firmware, and there are many games that don't run without anti-piracy patches (such as Pokemon Black and White) or even WITH those patches still crash (like Solatorobo). I originally had an R4, but due to massive lack of support of many many games at the time, I replaced it with a CycloDS, though I think there is 3rd party firmware now that surpasses the CycloDS, but I don't think I have that R4 anymore. So, since I am hoping DS carts are cheap now since the 3DS is now almost on the way out, are there any DS carts that are still supported and can play all or practically all games without needing any kind of patch? Would be nice if it worked in a 3DS too, but it's getting it workign in a DS that I mostly care about.... and being compatible with my EZFlash 3-in-1 GBA-slot cart for my DS.