Ok. Cfop is the best period. Reason 1. Easiest lookahead. Look ahead is easily on of the most important factors. It is even more important than efficiency. 2. Cfop has best finger tricks. ZZ has awkward moves, and roux uses m moves which are good, but, they are slower than other moves. 3. I think that Roux is almost as good as cfop, but not as good, and zz is the worst. Hardly anyone that is top100 in the world for 3x3 uses zz. Majority uses Cfop, which proves that it is the best. Also zz is terrible cause Zbll and coll is useful, but it is so hard to learn them all, and at the beginning, you do a bunch of moves so that you don't have to rotate, but in reality, all of the rotations combined is faster than all of those moves.