IMO, absolutely, sound and object movement is more discrete, plus depending on the mix, Atmos can give you a real sense of atmosphere that just hasn't been possible before.
I'm running all height speakers in the same exact locations as I was prior to Atmos (prior to Atmos, PLIIz w/ heights and simply duplicating my Surround signals to the height speakers) and 7.1.4 Atmos is far better than my old setup.