How are Crimson cables

I own them and they got me off the merry go round. Balanced and engaging sound.

Yes, they are great interconnects. They are extremely "open" sounding, with a great sense of air and speed. I demo'd many interconnects a few years ago and they were the best by a considerable margin. The only IC that was close was from WyWires, but I felt the Crimson Music Links were better. And they were the least expensive to boot. I use the ICs exclusively in my system now. I think the distributor in Austin TX is pretty easy going about demos. Bob Neill at Amherst Audio is also a dealer who offers lengthy trial periods.

I've been using Crimson speaker cables for a long time. Many a cable has come and gone, but the Crimsons always find their way back into my system. I have no intention at all to make another substitution.
I've also used the RCA and XLR ICs over the years with amazing results. However, I'm currently using JW Audio's Reference ICs and am VERY thrilled. My system configuration has changed many times since the Crimson ICs so I can't really make an accurate comparison.

I tried them a number years back when Creston Funk first began to carry them. I dad a complete system change and decided to keep the speaker cables and send back the IC's. I have since replaced everything in my system with DNM HFTN Cables and like what they do better than the Crimson. YMMV