Fan controller.......help please

[only_me]

i've got a thermaltake tsunami case,
i don't know what fan controller to use to help make the computer quieter, the fans in the case are all 4 pin, can someone recommend cheap and good fan controller
any other ideas to make it quieter would be great

 

[kolemunky]

vantec fan controller

I picked up one of these and so far its working great. also available in white or silver.