Best affordable XLR?

$100.00 each good luck with that sport.

Check out Audio Circle they tend to let cables go for cheap. There is 2 pair balanced Grover Huffman FX plus 2 meter $80 shipped also SX 2 meter balanced $40 shipped. He had a 8 meter balanced pair FX plus for $100 shipped but I bought them to cut up into balanced and single ended. 

I was  shocked  how good they sound, I just bought them for the hell of it, I've always been intrigued by ribbon cable.  I preferred them to my Acoustic Zen silver ref 2's at one fifth the price new. Very transparent big stage and bass. if your system is bright they may not work. Even new at $200 a pair is a bargain. 

For 100 ea, I would be looking at the Canare star quad or mogami Quad cables. you can buy in bulk and terminate yourself or buy already terminated. The Neutrik XLRs are pretty easy to work with. 

Blue Jeans Cables?  

A 6 foot pair made with Canare and Neutrik connectors is about $72.