Long XLR Interconnect Cables

My Dad actually prefers his later generation AQ Lapis and Diamonds over his KCAG. All his cables are single ended, but I took my CD balance over to his place to see how it faired against his Diamonds which run between his Sonic Frontiers preamp and ARC amp and we both felt the Clear Day was superior. Sure a lot of it probably had to do running his equipment balanced. The AQ Diamond may be an older cable but it's no slouch; still a very good cable by any standard. The thing is, the Clear Day new is cheaper than a used AQ Diamond or Lapis any day of the week. I'll probably let my dad use my extra CD balanced now that I'm thinking about it. 

Great, thanks. I too use balanced whenever possible, and like silver. I’ll look into your other suggestions. How cool to have a Dad you share the passion for Hi-Fi with! I'm the Dad, and my kid just wants to smoke out with me ;-).

I recently went from short balanced interconnects between preamp and amp and long speaker wires to long (23 feet, 7 meter) balanced interconnects and short speaker wires and I like what I hear. I’m using Mogami 2549 which is VERY inexpensive, and VERY low capacitance. I terminated myself using high quality XLR connectors (rhodium over copper + teflon). Both SS amp and preamp are fully balanced; preamp has output impedance of 110 ohms..

I read here about kilobuck interconnects that are completely out of my price range. I would consider using a better (more expensive) BULK cable. There are lots of them ranging in price from under $1 a foot to about $10 a foot.

Would anyone else using a long balanced cable share your experience? Please note the length that you use. Thanks.

only a slight difference - I'm using preamp to amp - 14 feet

Long (balanced) cables from source to amp with short speaker wires is the way to go, especailly if you can put sources in another room. Less vibration.