Is buying the official wii nunchuck for shooters way more efficient than buying 3rd party nunchucks?

COD: Black Ops uses the nunchuck or classic controller (pro). I currently have 2 official chucks, 2 third-party chucks, 4 wiimotes, and 1 CC. I am not sure if The Grinder will utilize the CC(P) or even the gamecube controller, but I'm guessing it eventually will for the CC(P) considering Conduit 2 uses it and they are both by HVS. The price of a Nintendo Nunchuck is $20. Is that a good price to pay for reliability and value?