If your display does not support Dolby Vision, then the lack of DV support on the player isn't a big deal. If your display does support DV, though, then it's a big deal, IMO.
I had no issues with playback on my Panasonic UB820.
As for the image itself, I was awestruck initially by how good the pictured looked. As I became engrossed in the movie itself, though, as usually happens I stopped paying attention to how good it looked and just enjoyed the film. Anyway, I...