in my lounge i use a Yamaha AV amp and Bose Acustimas 5.1 system, i don't have Atmos only Dolby digital and DTS, I'd say if you intend buying a new setup then make sure you go for an AV amp with 4K pass through and with the most up to date audio encoders possible, so yes definitely make sure you get Atmos. Atmos is better than the systems before it, but it's not night and day better, speaker set up and EQ set up is as important so I would get an amp with an auto EQ set up as it will make life much easier, also some dirty great subs for the true cinema experience