I would probably jump on that Anthem if you were interested.
I have posted this statement in other thread, but the HT Processors really don’t keep their value at all because of the perception that you need the latest and greatest digital decoding / HDMI2.0 / Atmos, room correction, etc. etc. As a result, the value drops like crazy the older they get (this is not like 2-channel audio!!!)
Another one you could look at is Krell HTS 7.1. There’s one on audiogon for $850 (original retail $8500). I used one of these for about 12 years before it died. The Krell uses fully discrete Class A analog stages with all linear power supplies (shunt type power supplies). It sounds absolutely beautiful and it beat newer HDMI processors in sound quality, even though it was limited to oldschool Dolby Digital / DTS through DIGITAL COAX. It also has all 7.1 XLR balanced outputs (where the Meridian only has left/center/right).
There are many older HT pre/pros that are of excellent sound quality, but don’t support the new HDMI / bluray stuff.