Hi there, I'm not an expert but just in case it helps, I also have the Cardas Clear XLR 4 pin. THINKER also has the Cardas Clear XLR 4 pin, and he's terrific at explaining his impressions. (you'll find some in the earlier posts) In my opinion, I suggest you wait for the clear cable to arrive. IT'S WORTH THE WAIT!
Because I'm not technically versed on it, I can only describe my impression - it sounds smooth and silky. Like bathing your ears in cream!!! Unfortunately, I only have the Cardas Clear Light in 1/4 inch so it's difficult to compare directly with 4 pin Clear. The Light in 1/4 inch sounds really fantastic, but the Clear Balanced is a phenomenal step up. Sorry I can't compare them as both balanced.
GET THE CLEAR!!!!! :)
I did a blind test yesterday between the cardas clear and this http://www.ebay.com/itm/2-5M-8Ft-Upgrade-Cable-For-SENNHEISER-HD800-with-Balanced-XLR-4pins-CANNON-PLUG-/221219807298?pt=US_Audio_Cables_Adapters&hash=item3381ba6042 and I couldn't tell the difference. I also have the sennheiser HD800 balanced cable on order which I should get in August, I am going to do a blind test between all three and see if I can hear a difference.