I do know that about redbox and other rental options, but $2 vs $20-25...
I saw Mad Max Fury Road pre-atmos setup and liked it. Definitely worth another viewing.
I'm batch'ing it this weekend while the wife and kids go visit the in-laws, so I may rent The Great Wall, John Wick 2, and/or xXx : Return of Xander Cage . All are listed as Atmos on the Dolby site...will see if the Redbox versions are Atmos.
Ha...just looking at the list again, Minions is Atmos (which we own due to the kids)