E.S.P. (Essential Sound Products) power cables

Looking at E.S.P. current, as in actual, power chord offerings : MusicCord-PRO ES & Essence Reference-II for a tube amp. From what I can deduce from their site and few reviews the 3 times less expensive MusicCord-PRO ES is recommended for power amps and the Essence Reference-II states that it makes digital sound more analog which I would think meaning "warmer¨, so different but maybe not necessarily better for the neutrality I prefer. Has anyone been able to listen and compare THESE 2 in particular ? Thanks to all in advance.