I can only speak from experience, having had systems that were first B&W, next Dunlavy and now Revel Ultima. My current system consists of the Revel Studios (as the main left-right speakers), the Voice (as the center speaker), the Embraces (for rear speakers) and two Sub 30 subwoofers. The power amplification is all Krell: FPB 200C for the main speakers and KAV-250/3 for the center and rears. The cabling is all Transparent Audio Reference.
I do not know whether my sound is "perfect". What I can say is that I hear "everything", and my fellow movie watchers are consistently entertained -- and new ones often wowed.
Seriously, I have heard a lot of systems, but I have not heard one that provided a better sound yet.