Not the TWL 7+ but I have a Gran Corona on my tube integrated and TWL cables everywhere else in my system (two 8s, a 10 and a twelve) and I generally prefer the TWL cables by a small but relevant margin. Better tone and more organic and just as quiet.
The exception is on tube amps and preamps, I tend to prefer the Gran Corona. I made the analysis to a friend of the 8 gauge TWL on my Melody singing sweet little nothings into my ear while the Gran Corona is more like STFU and take it!