I went to a 2nd store (local custom installer place instead of big box store), they didn't have an 844, but we did the same thing with 2 80" 632s, one was calibrated in a "viewing" room. Exactly the same issue on both. There is either some setting we are missing, or those TV's are crap. The PQ is fine, but I don't know how you guys stand the panning aura.
The thing is, it isn't subtle. It is a freakin huge, obvious blur halo around all focused objects during pans. It looks like a CGI effect it's so obvious. Are you guys telling me that your sets don't do that? Or, do you just learn to ignore it?