coax....what? You taking audio interconnects, video interconnects, RF cable?!
Personally I'm a new found fan of bluejeanscables.com for the price, I don't think they can be touched...course that's if you don't care about having "fancy" cables. Right now my mix of Bettercables, Cobalt, Monster, and Bluejeans, I really can't tell the difference between any of them, but bluejeans' were the cheapest.
yeah more info needed bud, coax doesnt really have a gauge, what your lookin for in coax is the ohm rating and that will depend what your gonna use it for. if your asking about speaker cable and said coax by mistake just use 12 gauge all the way around