Flux Spat Revolution is probably one of if not the top of the line.
I have DearVR Pro, and it is very good. In isolation, the reflections/reverb quality in DearVR isn't my favorite, but for most spatial placement work, it is fine. Spatial placement is very good, and easy to setup and/or automate (at least in ProTools).
I believe Flux Spat uses the same reverb/reflections engine as Flux Verb, and I do like, and use Flux Verb 3. It has been a while since I used Spat, but I am in the process of demoing it. So far, it is far more flexible, but quite a bit more complicated to setup and use.
As far as automating spatial movement, DearVR may be easier to get quick results, and a bit lighter on cpu, but Spat is probably the most extensive I know of.
$349 for DearVR Pro (Plugin Alliance) vs. $1790 for Flux Spat Revolution. Then there are subscription options for both. The price difference reflects the significant feature differences.
Last edited by kdm; 18th April 2020 at 02:44 AM..