Pierre,

I use Ilford MG papers and Gekko VC B & W papers on a Zone VI Beseler 45mxt cold light head. No filter used to correct the cold light color. Have had no problems with either paper. I use a standard set of Ilford VC filters to control contrast. They all work fine on either paper - my prefered paper is the Gekko.

I've seen the CC40 at auction on Ebay currently. I have no idea what advantage it may provide to your printing. If you get one, please let me know if it improves your contrast response for your printing.

Good light. -Steve