For ultimate flexibility in choices (i.e., custom-made), try Douglasconnection.com . Doug has various grades of raw cable to choose from, including Canare, Mogami, Furez, Furutech. Same with connectors, including ETI, Vampire Wire, Furutech, etc. Of course you can choose your own custom length. There is detailed information about each product on his website, so you really know what you're getting.
I went the DIY route with his products, to save a few dollars, and because I like to tinker. You can give Doug your budget and your specs, and he will come back with various options/combinations for you to select from. I've done RCA and XLR interconnects from him, as well as power cables. He also has digital coax and speaker cables. Doug is a great guy to work with, and you really can't go wrong with any of his product offerings.
I went the DIY route with his products, to save a few dollars, and because I like to tinker. You can give Doug your budget and your specs, and he will come back with various options/combinations for you to select from. I've done RCA and XLR interconnects from him, as well as power cables. He also has digital coax and speaker cables. Doug is a great guy to work with, and you really can't go wrong with any of his product offerings.