Noctua NH-D15 is one of the best out there. Also the Deepcool AK620. I personally have gone with the Deepcool line for most of my builds because of the color scheme. Thermalright has some solid products too, but I feel that the Deepcool has way stronger fan mounting clips and looks better, so I stick with them.

Noctua NH-D15 is still top dog for air coolers.

I recently switched from NH-D15 to NH-U12A with no noticeable difference.

is the u14s good for the 14700k