whats the very best sounding cables for realistic money

You owe it to yourself to look up Triode Wire Labs (TWL). Best sounding, reasonable priced power cables I've heard. I went through a few brands at double and higher the price. TWL won for my system. Ill never use another. Pete's SC's and IC's are great, too, and there is definitely a synergy there going all TWL but there are so many out there, you can go whatever direction you'd like...but going all TWL for power makes for a quiet, organic, full bodies sound. The option to have certain cables for high power, digital and other makes for great system matching, as well. 

@david_ten, I have some Seven+, an older Eight+ or two I'd like to upgrade at some point and a Digital American. would also like to try a High Power for the amp, which might have a bit deeper bass over the Seven+ but they are close in performance to each other, from what I've read.