So getting the upgrade itch after just upgrading my TV to a LG 55” C1 Oled. Current set up is Denon 4200, Polk monitor 70s and CS2 center channel for LCR and 2 old Cambridge Soundworks surround for my surrounds which have to be placed slightly behind MLP. And my sub is also an old Cambridge Soundworks PS1. Everything sounds ok right now but am thinking of maybe adding 4 Atmos\/height speakers or a new sub\/subs? What do you think would make the most impactful difference between those 2? This is in our living room so it’s not like a it’s a full blown media room or theater. Room is kinda odd shaped and setup due to built in shelves so my viewing area isn’t ideal for great speaker setups. Room is 20’ L x 12’9” W x 8’8” H. I would love to get a massive sub but just not sure I have the room for it, and again cause of room setup theres not a lot of spots to put it. As far as Atmos speakers I guess they could go directly above L & F on soffit pointed straight ahead at MLP. As for the 2 rear Atmos I was thinking in the corner of the soffits again pointed at MLP. Only problem is with rear Atmos they can’t actually be behind me they would end up being pretty much in line with MLP but out wider than the fronts? Do you think that will work? Another question I have is if I’ve read everything on my receiver is I would need an external amp to power 2 of the speakers correct? Sorry for the long post as I’m kinda getting back into all this stuff and any help is greatly appreciated.