I have all signal cable silver resolution cables in my system. I like them quite a bit. I've compared them with many others and I think they strike a good balance of extension, bass and detail (fleshed out?).
I believe that cables, just like everything else, are system dependant but I think you'd be happy with signal cables. Try to demo some different cables before you buy.
Blue jeans belden 10 gauge are actually pretty damn good also, if you're going for copper. Good extension and great bass. Just not as fleshed out as some silver cables, but with your set-up (and the focals) they may work for you. You could pick up a pair for $80ish and then compare them with whatever else you demo...
Clear day shotguns (all silver) are nice also, and Paul might have a demo pair...