It sounds like you’re ready for or need the serious HT thrill!!
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Which means you definitely need a sub upgrade to fill that 5760 cu. ft. space. An SVS PB12-Plus/2 may be more appropriate. More $$$?
I’ll third the Ascend reco’, very good bang for bucks. More reco’s for mains:
Axiom M60/VP150
Klipsch RF35/62/82,RC35/62
Boston Acoustics VR2/VRC
Energy RC-50/RC-LCR
Monitor Audio RS-6/RS-LCR
Phase Technology V-12/V-6
PSB Image T55/C60
RBH MC-616C MKII
Definitive Technology BP10, CRL2000/CRL2000
To name a few.
