Dedicated Circuit


I'm thinking about running a separate line from my breaker box to the outlet I use for my system.  What is a good wire to get, preferably not too expensive?  Also, would it be beneficial to change it to 20A? Anybody got a good link where I can read up on this?  
terrapin77
Thanks for the info!! Since I don't need to tear up any walls to run the wire, my thoughts were might as well run a dedicated line.  It certainly won't be detrimental.  Also, just found my dad has 100 ft of 12 gauge Romex at his house.  My only expense would be getting a higher quality outlet.
I have a solid wire 12AWG/20A AC circuit for the PC & TV while the Audio Rig has a dedicated stranded wire 10AWG/20A.