I like it. I've had the Ref Transparent SCs for a few years and they were a big upgrade over the prior SCs (Transparent Ultra, I think). At that time, I had a mix of other cables in my system.
I haven't wanted to move to new SCs due to the investment I have now in these cables and cost to upgrade/move. If I were willing to drop another $13K or so (I'm not), I'd either go with Shunyata Sigma SC to complete the loom or upgrade to Transparent Ref XL.
Over the time I've had the SCs, I've upgraded the rest of the loom to Shunyata Sigma...with each addition, I liked the sound more and more.