I went from 7' to 18" in the same cable, Stealth Ultimate Ribbon. This is high enough gauge for 7', no obvious problem there. But I was brought MUCH closer to the music with the 18" cables. Unfortunately, this short a length calls for monoblock power amps, for stereo listening. If you can plan to have monoblocks in the future, near or more distant, you won't be disappointed by the improvement--if my experience is anything to go by.
