Kolts is supposed to have very good sounding snakes. Its probibly due to the copper quality, wire gauge and low capacitence/resistance. it is hard to find info on them other than a few posts here and there. I wasnt able to find any online sales outlets either but did find their site.
It really comes down to price per completed foot though. you really dont know whose making the actual cable for them. I wouldnt be surprised is they are simply a cable assembler and not the actual manufacturer of the cable. Companies like Beldin have been providing the best cable for assemblers who brand the cables with their own names for many decades now. lately theres allot of other imports gaining market share at low costs. Some arent bad but it still comes down to quality and cost per foot.