I have a dedicated 2 channel and a dedicated 5.1.4 setup and purchased my first SACD surround when DSOTM came out to sell multichannel surround mixes. As should be expected, the experience is entirely based on the source material and the setup.
Not all sources are created equal which carries over from the world of 2 channel music. The great is great and the mediocre is mediocre. Steven Wilson produces amazing multichannel surround music and some of the Dolby Atmos mixes are good as well when it comes to surrounding you with the mix.
The second item is setup. My Dolby Atmos speakers are in the ceiling, which is the recommended and preferred location for spatial audio. So I get "true" overhead sound compared to the setups where the sound is reflected off the ceiling and back to the listener.
I'm excited about spatial audio but horses for courses as the saying goes. Some music lends itself well to more than 2 channel reproduction and other music does not.