Hi Guys, I currently have the Onkyo 646 AVR which i purchased last year with upfiring atmos speakers. I am currently going to be doing a sort of overhaul of my home cinema room, adding things like better sound/speakers, new epson laser projector and DBOX seats. In my room i currently have a 5.1 system in place with the following speakers: A pair of B&W 603 S1's Floor standers A pair of B&W 601 S1's Rears A B&W CC6 S2 Centre A B&W ASW1000 Sub Woofer After realising that i am going to need to push the Dbox seats a bit forward (currently sofa is at back wall) for the reclining and motion, I've figured that i can get a 7.1.4 system installed in the room. The up firing speakers i had for Atmos were largely disappointing and did not really work for me, possibly because of the high ceiling i have in the room at about 13 feet. This time round i am considering adding 4 in-ceiling speakers to the room, two in front of the seating area and 2 just behind. For this i am going to need a new AVR that can possibly do 7.1.4 and can also give me better sound then my current Onkyo 646 does. Please can people recommend me which AVR to go for ? I have also added pictures and a drawing of what my current room looks like, so any advice on adding the extra speakers would also be welcome.