Using competition metrics, we can judge sound quality by testing for specific parameters like width/depth of soundstage, tonal accuracy, etc. Most of us would just slap a Morel Maximo over a stock HU and call it "SQ", but most enthuiasts won't be content until they can accurately pinpoint that "triangle is 5 meters away from the microphone and is 70% to the right".
Anyway, debates aside, go follow Tsikotshop's post above. If he knows your equipments, he can guide you accordingly. It'll be a waste to discuss the distance measurement of time alignment if you aren't using a T/A ready HU for example. Good luck!