Well, i'd certainly go for the xigmatek, the price is cheap but it performs at the same level as Ultra 120 Ex.
Although IFX is teh best on performance and aesthetics, but don't forget about the price and the size.
I'd certainly don't want that bulky heatsink in my system.
Seriously.
Well, both type of heatsink that is blow out [Ultra 120] and blow down [Bigthyphoon] has it's own pro's and con's.
The blow out heatsink can help exhausting the hot air out of the casing directly, that's a good thing, however, the weakness, it doesn't help in cooling those hot pwm's and some other stuff on the motherboard.
While those blow down type of heatsink does help in cooling the PWM's and some other stuff on the motherboard but it's weakness, it always blow back to the system and does not help much in exhausting the hot air in the system.
Both types of heatsink has it's own pro's and con's.
bro, when u gonna put me in the list?i also want my name put together with them, waiting for u to do so since 2 weeks ago, constantly checking on this thread every time i log in in this forum, pls update it bro