Originally Posted by Cubster4
I will probably upgrade center from the current 5000 to a 5200 or perhaps a 7200......and then hunt for 8000's

If your goal is a pair of 8Ks then, providing you have space and funds, I would consider nothing less than a 7200HC for a centre.
It matches the 8ks well and has enough power to keep up with them.

Regards
Carl

861v6+ID40, HD621, 8000.2, 7200HC, 7200.2, SKYQ Silver, PS3, PDP-LX6090, QNAP TS870-Pro (8*6TB), Roon, iPadAir2.
[In Reserve] C15, MD600 (2*3TB), TwinStore RM (2*2TB)