If we are talking HT use, which is what I stipulated, room modes determine SW placement. I think
@gene would agree with that since he promotes doing the sub crawl.
I'm into Orchestral music and much of that has a wide dynamic range. Full floor standing speakers are great for that 'wall of sound'. But that is 2.0 and we are talking 7.2 or greater and the OP's budget doesn't support the RBH speakers you are talking about.
I believe if you're in earnest trying to steer him toward that type of speaker, where it's going to dominate his budget, then it's a disservice.
If he had a $60K budget then things could be different.