Drew> I have the same setup ie dedicated circuit and HTS 2000. I added the HTS 2000 prior to the circuit and I have never thought my system sounded better because of it. However I don't think it has degraded the sound either. I have plugged my amp into wall and conditioner and can't hear any significant difference either way. For me the biggest improvement was the addition of a dedicated circuit. I have my amp plugged into the wall because concensus says that is the way to do it (plus when I put it back in the rack the last time it was easier to reach than the conditioner).
As to whether you are fooling yourself, I think probably no more than I am fooling myself for believing the concensus of what is in vogue at the moment. And with summer coming and the thunder and lightning starting to come you might see a post by me saying "My amp is fried. Was I fooling myself by not having the good common sense to plug my amp into my surge protector?" I guess that's why they call us audiophools
As to whether you are fooling yourself, I think probably no more than I am fooling myself for believing the concensus of what is in vogue at the moment. And with summer coming and the thunder and lightning starting to come you might see a post by me saying "My amp is fried. Was I fooling myself by not having the good common sense to plug my amp into my surge protector?" I guess that's why they call us audiophools