One more vote for Flux here. Bought yesterday Ircam Verb V3 (the big one /99$). Oh my ... what a pure realistic reverb plugin here!
The IK Sunset is very nice too but the Flux .. deeply tweakable and what a sound.
Cinematic Room from Liquidsonic is absolutely stunning too.

I own far too many reverbs (including the exponential and Valhalla). Recently got most of the FabFilter plugins and have been really enjoying Pro-R. Some of this may be liking the new shiny thing but it is so easy to dial in. I spend less time fooling around and I get the results I want. Nice and simple. If you really like the Exponential algos you may also want to try NeoVerb. Not as instant as the Pro-R, but flexible and quick to dial in. Not sure about the whole AI thing. Once again - I have both (and more) but I’m tending towards the Pro-R just because of the workflow.

Yeah, those FabFilter guys sure know how to finetune their GUIs.