Straightwire crescendo or xlo sig 3 interconnect

I'm breaking in a wadia s7i cdp direct connect to bryston 7bst monos. Running unbalanced silver audio silver bullets 6.0 now but want to upgrade to balanced. I'm looking at the Straightwire crescendo and XLO sig 3 (2m balanced)Any experience/descriptions with these two?
I have the Crescendos and love them. I had the Nordost Buldars and they were good, but the Crescendos were more open, extended, and the sound stage was just amazing. I am sorry I have not heard the XLO's.