Also consider 3OP for corners (which is what I use). You can read about it at cubefreak.net. It involves doing the orientations and permutations separately. MatsBergsten might be right but I personally haven't taken the leap to memorizing and executing both orientation and permutation at the same time.
Pochmann is easiest, but requires a massive amount of (fast) turns.
3OP is more difficult because it requires more setupmoves that also has restrictions. Also it requires more memo (orientation and permutation seperately)
R2, Turbo and BH-corners are all advanced methods. Not hard, but certainly not as easy as classic Pochmann