rxTools - the best for OLD3DS
http://gbatemp.net/threads/tutorial-installing-rxtools-custom-firmware-3ds-and-2ds.390867/
ReiNAND - awesome for NEW3DS
https://gbatemp.net/threads/source-release-reinand-n3ds-cfw.394309/
I'd disagree. Cakes and AuReiNand are the two best CFW at the moment and work for both o3DS and n3DS
There are 150 of us in #3dshacks on Rizon right now.what