ZALMAN ZM-MFC1 Fan Controller Panel
I have one on 2 rig's atm. One of them is the CM590. It's not exactly the best perhaps out there, but I like it.
I find it handy to use one of the toggle switch for the side fan, to where you can shut fan off (5v/off/12v) while the system is running, and take the side cover off.
Also, you can daisy chain perhaps 2 fans on one channel, so you don't exactly have to have 7-8 channel controller.
Edit:
Also it uses a 5 1/2 bay. One reason why I got it, since I normally have 1 or 2 bays used. :lol:. o O (might as well use the empty bay)