Has anyone used Synergistic Research Alive cables

okay 

Yes. I was using the Atmosphere X Alive speaker cables with a Pass Labs Int 250 driving GoldenEar Triton Reference. I was really happy with the sound. However I tried some Silversmith Audio Fidelium and fell in love. Look for my X Alive to show up on marketplace this weekend.

I have the Atmosphere Euphoria interconnect. If someone had told me an interconnect could make this much difference I'd never believe it. But then I also have SR Element CTS speaker cable, some of their older power cords, and have been a very happy user going back to the early 1990's. 

Look at a better cable with better bass stage and detail look at PURIST.

I have the Atmosphere X Alive speaker cables along with a slew of interconnects and PCs, Conditioners and Fuses from SR. Some people either love or hate this company. I’m  using SPL/Director/Performer combo into Spatial M3 Sapphires. I love the improvements sonically. Very natural and balanced. I feel every SR element in my system has shown it’s worth IMHO. You should demo them chee