It's a hell of a deal on budget, I don't think anyone disputes that. Although people also managed to buy 3800H well below $1K at times.If you got the dough, a big room for all those boxes, WAF, time and patience to integrate 9 transducers, and those golden ears to hear those improvements, sure go for it. If you live in a smaller dwelling or renting the RZ30 is a hell of deal at $800 with a lot EOU and money for better speakers. I believe all of those owners that are not seeing any power limitations. Also SINAD over 80 is not audible but one can get extra 30 of those ghosts for very little cash. Sorry a bit OT.
You don't really need golden ears or patience to integrate a large ART system though. So not sure where are you coming from? You can't be comparing RZ 30 over 3800H with their max Dirac capabilities except in price?