...Also several have mentioned QS8's are no bueno for Atmos...??
Most people have reported (& it's recommended) that for Atmos you need direct firing surrounds at ear height. Whereas non-Atmos 'traditional' surround formats (5.1 or 7.1) the more diffuse QS8 surround speakers are great and at higher heights for best effect.
But since your receiver is capable, try turning Atmos on and see what you get. You might like it even if it doesn't follow the recommended configuration. Experimentation is part of the fun.
I'm personally going to be running my 7.1 for quite a while longer as switching to Atmos would be a big cost/renovation factor for my room. And i still love my QS8's. And I am hoping the M5's will cure my upgradeitis issues for awhile. And I hope they ship soon!