Basically the title what is the best fan controller which wont break the bank
:)
This is mine, Not a bad price and it's clean and simple. Powers all mine fans and a set of LED's. Works great.
http://www.newegg.com/Product/Product.aspx?Item=N82E16811992007&cm_re=nzxt_fan_controller-_-11-992-007-_-Product