Go with a corsair sp or af fans and repaint the rings yellow/orange to match your case.
I have a few Corsairs laying around, but are they so different from cougars? why Corsair over cougars?
Well, fans will always be fans, theres no really big differences between them. It's really based on preference, I currently use all corsair af and sp fans in my system. If you like the aesthetics of the courgars over the corsairs, then by all means go with it. When it comes to fans, if their specs are almost the same than there isn't really a reason to go with one over another. As for the rads, I would go with alphacool XTs.