You want a heavy cable. Thicker is better. Any girl will tell you the same thing, lol.
I'd say anything 14 ga or less (thicker) is quite adequate. And a shorter cable is better. Unless you ever see the head being anywhere other than on top of the cab, a 6 foot cable is perfectly fine. The longer the cable, the more the signal suffers.
that's what i thought. i might just buy some connectors and make my own. i have some 10 0r 12 gauge left over from wiring my room for my 6 ohm speakers.