Best as in best bang for the buck ?
Phanteks PH-TC14-PE
Best as in Best aesthetics ?
Phanteks PH-TC14-PE
Best as in best thermal performance ?
Cryorig R1
Best as in best performance / noise ratio ?
Noctua NH-D15
I dunno what's going on but in the last 4 - 6 weeks air cooler costs have shot up $20
here's the two top performers compared against some water cooling options ... air coolers kick some tail here
Among those 2, I'd rather have the 5 dbA advantage of of the Noc than the 1C advantage of the R1