xp90c is not bad but then to fit it with a screamer fan. the noise is loud. xp120 and typhoon is good also. vortex is heavier than xp120 and xp120 has alu fins only. kinda hard to choose as i love si120 and xp120. but i find vortex's fin is a big too dense but if what the other forummers mentioned that it can only stick to its stock fan. then its not nice as you cannot pair with other fans than have enough pressure to push thru the dense dan.