anything from Noctua is great for its own level of needs, you asked for the best, the best is NH-D14 if OC is a primary need.
i have the nh-u12s (same as nh-u12p, but with one fan only) coz OC for me is secondary and gaming is primary (since i want to preserve the top fan holes for GPU water cooling heatsink).
so that depends on your needs.