$50k - $80k Budget…Opinions please.

Yah room is important  but maybe you can't do anything to the room.  Obviously, you had the Harbeth in the old system, and that worked out fine.  I have been in your shoes twice in the last 4 years.  I did travel around the country to visit areas where there are a lot of dealers and also attend shows.  

The main priority is finding a speaker that you really love and it will probably be different than Harbeth.  You are probably going to be looking at speakers in the $20-35k price range.  All of the other components are a piece of cake after the speakers.  If you find a speaker you really like, see if any are available on the used market.

I once bought amps before a speaker.  What a major mistake.  I ended up having to sell the amps and never played them.  Buy speakers first.  

Is Soul Note making the world’s best sounding gear on the Planet now ? 🤔

https://www.youtube.com/watch?v=5KNtDsGKLwA

 If you can't afford this Soul Note Reference System they just came out with the new Soul Note A3 Integrated amp.. Major-Breakthrough for Integrated amps 

https://www.youtube.com/watch?v=mCdfv41PE3Y

Magico, Rockport, Vinberg (some great reviews) 

@bobfun - at AXPONA 2022 last year, I demoed the Magico A5 and the Rockport Atria II to help finalize my final speaker purchase.  The Magico’s had better treble highs but the Rockport sounded more together but less forward.  I heard the Vimberg Minos which sounded fantastic, but it had the diamond tweeter upgrade which added $10k so I assumed it was out of my budget.  After the show, I spoke to my dealer Chris at Artisan Fidelity and told him about these 3 speakers, so a few back and forth raising my budget and lowering the price until a deal was reached. So I’m a proud owner of the Vimberg Mino D. 

@toddcowles 

I’m at the THE Show in Los Angeles and plan to go to the Pacific Audio Fest in a couple of weeks.  I suggest that you attend High-end audio shows to see and hear what YOU like.  I like Magico and YG speakers, but Wilson speakers never resonated with me…yet.   Speakers sound different so it’s best you hear first hand.
 

The largest North American show EXPONA just past, but there are a few other shows.

DarTzeel LHC-208 integrated amp together with Stenheim 03 speakers will give you an organic sound you will be very happy with.

I have to say, I do agree with gavman about Macintosh.

Most 80K systems will be 'hi fi" sounding rather than organic.Think Wilsons,Magico,Focal etc Which means that you will get sick of it and hardly use it .I have friends with Magico speakers who simply stopped listening to them.Or hop on the "upgrade " path which will only lead to more expense and frustration.

You could do a lot worse than vintage Tannoy  Monitor Gold 15s in a nice big Onken box [say $8000]  [or some Harbeths] and a Chinese copy of a Dartzeel NHB108  [about $1000] power amp and a Supratek preamp.[Say $4500] Those just make  lovely music and are organic  but are also high enough resolution.