I know the fan controller has issues but you can send off for a new upgraded one.
I hear there are issues with buying non-coolermaster fans? Is this true?
If you want LED fans to connect to the fan controller it has to be 2pin or, as said before, cooler master fans. But i havent heard anything about not being able to add non cooler master fans, my surgestions is Noctua, Corsair (new series) but buy quality.