Rather inclined to try some of this: http://www.ebay.co.uk/itm/1213815725...84.m1423.l2649
The price seems pretty reasonable (this is unterminated). I've not tried Audioquest speaker cable, but I do have a couple of their interconnects that are good.
I've looked at reviews and they seem very favourable. Well liked by a couple of Klipsch users apparently. If any speaker is going to show up a cable's tendency towards coarseness, they should.