LOL! Matthews, as you no doubt have realized by now, asking for advice on a forum can really open a can of worms. Take the Emotiva back, trade up the Emotiva, it's the USp-1, it's the speakers, it's the room, there is no difference, pro amps all the way(repeated about 50 times) Parasound, NAD, Rotel, what was the question again?
You're going to have to perhaps organize your thoughts. You've decided to strike Emotiva off the list. You've decided that the Harman Kardon sounded better than your Emotiva products. I'd say, whenever you get the Emotiva amp back fixed, sell it and sell the USP-1 and start over. Nobody wants to believe that the Harman Kardon sounded any different than the Emotiva, but just trust yourself and your instincts. Take your time and don't allow yourself to feel pressured by anyone.