I've been using Maze Audio Ref 4 power cords for awhile now, but just ordered one of the new ones from GR Research to try out (the B24).
The Maze Audio ones certainly sound good for the price (running SR Orange fuses in the devices they're connected to).
After a few weeks break in on the GR Research cord (should be here on Friday), I'll have a better idea of which ones sound better to me (at least in what scenario).
And, yep....couldn't agree more. Everything matters.