Speaker Cable Suggestions

the only help for the OP is to try different (inexpensive) cables from one of the 'rental'/return places until he finds something he likes

no way to predict what sound alteration will be most pleasing

There is always a lot of opinions on speaker cable. Lately in our audio club we have had some members experimenting with different cables including Clear Day, Grover, Western Electric 16ga, Acoustic Zen and many other brands.  A couple of us are using the Duelund 12ga wire.  I think it sounds excellent and it is very inexpensive as cable goes.  Just get some and try it and if your don't like it sell it.  In my opinion your room acoustics will make a bigger difference than any speaker cable.     

The goose says: "In my opinion your room acoustics will make a bigger difference than any speaker cable."

Bingo!  Clarity in a sea of confusion!   

I simply wanted to echo the one previous poster about anticables.com. I have their Level 3 and am pleased as punch. I think it's unbelievable value for the dollar. (I'm on Thiel 3.6, Bryston 4B SST, and Tom Evans Vibe pre-amp, with OPPO media server.) I bought, as a gift, a single Level 1 RCA interconnect for my brother, who is the one who got me into stereo, and he was amazed at what this did, in change, for his system. Simply one Level 1 IC from preamp to amp. 

**Purist Dealer**
Dragon_Vibe is right.  The noise level is so low with Purist cables that dynamics jump out more than other cables.  There is also a focus and percussive focus to every note that I don't hear with other cables, the blarey/smear goes away with Purist Audio Design.  They are just cleaner, and routinely win cable shootouts.  Good luck with your cable search.