Power Cable Suggestions.

The anti cable people never fail to show up for their drive by shootings. They have this urge to bad mouth cables. And I do believe that most of them can't afford them and some are simply ignorant. With Audioquest I started with Evergreen and went all the way up to Black Beauty. I had that one for a while and then I switched to the Thunderbird which is where I am currently at. And its only here where I was disappointed. Either my system cannot "reveal" it or the upgrade wasn't that much. I really cannot tell if the Thunderbird made any difference from the Black Beauty. I kept telling myself that it did(maybe it didn't). But everything up to the Black Beauty was always a clear and significant upgrade.

Now I want to try more underground brands. If not I would just buy another Tornado or Thunder. But I am hoping to find something superior to the Blizzard for less than $500. I wonder if its possible. And even if the new cable doesn't win over the Blizzard it will still make the T7i sub sound much better. Thanks for the suggestions, keep them coming. I will choose a cable tomorrow.

AQ power cables didn’t do much for me in a long run. Tornado, thunder and hurricane. They colored the sound. 
I use Kimber PK10 and PK14 Ascent throughout my system. Nothing stands out - very balanced and natural sound. 

Try MAZE audio, or Pinetree audio, good cables at prices that won't leave you broke.

I bought Maze Audio Litz with Billet plugs early on, when my system was upper mid-fi. They are 8 or 9 gauge, have excellent neutral sound with excellent noise rejection. Now that my system is high-fi, I continue to use them as they scale very well. 
Gemini verdict: 

The Maze Audio Litz Power Cord with billet plugs is a masterclass in straightforward, effective audio engineering. It bypasses esoteric marketing in favor of proven geometric noise rejection and rugged, high-contact termination. If you are looking to unearth hidden micro-detail, expand soundstage holography, and lock down mechanical vibrations at the AC inlet, it is an incredibly robust, highly recommended upgrade for any critical listening setup.