Have been running the JBL control 5 series for 15 years now and got so use to there loudness there bass response and range and there transparency, with three for the left centre and right two for height surrounds!
And a few more JBL loudspeakers too like the JBL MR centre and the JBL HT-1F.
If I had a little bit more money to spend I'll get 12 more, why you might ask, arr that's not a secret two more for the left centre and right centre, some more placed down the sides and more for the height surround as well as upper centre channel as used in IMAX cinemas the voice of god as it is called.