For unbalanced RCA cables?
Get someone on this board to build them for you. Check the retails space for cable builders.
Belden 1505F cable with Canare, Neutrik or Switchcraft connectors will be affordable overkill for the job.
Anything marketed as boutique or audiophile will not be any better, and most likely much more expensive.
If you want/need something faster, order from Blue Jeans Cable.
http://bluejeanscable.comThey use Belden cable and quailty connectors.