Well, I have compared a Transparent PIXL with Trans Ref XL cord to a Shunyata Original Hydra w/a Python cord to Hydra and either the Transparent cord to preamp or kimber palladian to pre.
Other thing to disclose is I run all Trans Ref interconnects and speaker cables.
I liked the Trans PIXL and cord better. Quieter, more musical, smoother frequency response. I sold my hydra, I did like it digital. However, I've moved to vinyl the last 2 years or so.
I think the net here is if you are running all Transparent cable, you'll likely like it better. If something else, it's really hard to say what will be better for you. They both are good...it's a preference thing.
If you haven't tried good ac plugs, like the porter ports, do that first. You might be happy with those and cords going straight to the outlets...which is what I'm doing now. I do miss the PIXL though...