
Noctua NH-D14 for best raw performance. Big and noisy though. Beats the H50 by some margin.
H50 for good cooling with small footprint and low noise.
Errrm I think you got it the wrong way round when it comes to noise. The NH-D14 is quiet while the H50 is actually quite loud.
I personally would recommend the Noctua NH-D14 or Thermalright VX.
Should I get the NH-D14 or Venomous X?
afaik the NH-D14 is a better performer, but it's huge. Like, massively huge. I'd make sure it could fit by taking measurements first.