What Tas offers up is VG.
OP,Do you need LED fans? How quiet does it need to be? What is the budget?
The above questions answered will keep your thread from being an open ended fanboy battle

.
For a very good cooler that is light weight, consider the Asetek VapoChill Micro. The SI-120 is better but not by a whole lot. Read some of the stickied reviews at the top of this page.
Everybody whorahs Panaflo, but after bench testing comperable Panaflos with Delta Triple Blade fans over a period of at least an hour. I will sell the four near new Pans i have on hand.
Check out the Deltas in Triple Blade type, for case and HS.
If you just want to undervolt to 7V then a PWM controller is OK. But if you want the best in just fan controll with no other options needed, a Sunbeam Rheobus @<$9 should be seriously considered.
Galvanized