Recommended receiver for HT

There is no such thing as a receiver worth buying. There are only receivers you buy because you don't know any better. I mean seriously, go and listen to them. 

If you're serious about downsizing the way to do it is multi-channel dreck to stereo quality. Ditch all your HT gear. One integrated, two speakers, done.

@millercarbon - he has already said he has a separate stereo music setup, so I don't think your reflex response is entirely correct.

That being said, if you are coming from a Bryston SP3 / Parasound system, going to a receiver will be a significant NOSE DIVE in sound quality.  If you want to shoot yourself in the foot, by all means go ahead, as long as you understand that you're shooting yourself in the foot, lol!.  As far as recommendations, look at Anthem, NAD, Arcam.  However, none of these receivers are going to sound nearly as good as Bryston SP3 / Parasound.

miller carbon, The stereo setup is Ayre 5 Twenty series digital hub, preamp, and amp with KEF Ref 1s. Source is mostly Roon playing downloaded, ripped, Qobuz and Tidal files, with occasional discs spun on the Ayre DX-5 DSD.

auxinput, The Bryston SP-3 was paired with 3 Parasound JC 1 monoblocks for LCR driving KEF Ref 107/2s and 204/2C, and 4 KEF LS50s for surrounds driven by A 23s. The JC 1s are boxed up ready to sell; the 107/2s have been given away.

An alternative to a receiver might be using the SP-3 and adding another A 23 to obtain 6 channels, but that defeats downsizing. I’m undecided about the front LR speakers for HT, but another pair of LS50s is a possibility. I’m alternating between Audio Engine A2+ and NHT Super Zero now.

The only thing that gives me pause about a receiver is that I do enjoy opera on Blu-ray, and, of course, Legends of Jazz, but that might be done by the DX-5 DSD to the stereo setup-- video goes directly to the projector from the disc player.

Probably the closest receiver to your Bryston/Parasound sonic signature is the NAD, but realize that it may not be quite as refined or full or powerful.  Alternative would be to keep the Bryston SP3 and look for a nice 5 or 7 channel amp.  It will not be as good as the Parasound JC1s, but it will still be better than a receiver.  All the receivers have very small power supplies with compromised amp board sections and the quality of sound just is not there.

If you wanted to keep the Parasound sonic signature, you could always get a 5-channel A51 amp.   Or look at alternative, like a Krell Chorus 7200 or even an ATI amplifier.  Or go Class D and look at a Wyred 4 Sound or a Nord Acoustics amp.  Basically, there are many 5 to 7 channel amplifiers out there which will be much better than any receiver, but not as good as your JC1s.