This will spawn some interesting debate! I use gx because I like it and my son understands how yo use it. It plays every game I own without any issues. I do have cfg also, I am not a big fan of the gui. It's really just a matter of personal preference in my opinion. GX is not really being developed, so updates and support are not really an option. CFG is seems to be the most often recommended loader although if you look at the polls, gx is used by more people.