So I am in the market for a new AV receiver and these two fit my budget. I currently have a Denon 2311ci that just lacks some features and I am looking to start building my 4K setup so the 2311ci will be on eBay shortly. My room is 18x18 with 8' ceilings. I currently have a 5.1 setup consisting over front klipsch reference 5.3I believe and kilpsch dipole 4.3 in the rear with an rc10 center. I also have a rythmik 12 port sub. My 2311ci is rated for 130 watts x7. I am first concerned that the x2200 might be under powered. But I like the feature set tremendously. I do like to turn it up some but not over board when we watch movies. It is purely a tv/movie setup, no music. I am planning on adding some ceiling speakers as well for my sides. I am trying to keep my expenses for the receiver under 700. The denon is on sale for 599 and the Onkyo is the same. The Onkyo is rated for 5 watts more. Power isn't as my driving factor as much as sound quality, sorround quality and 4K. I sorround fields and fullness, imaging and so on are my main points. Back in the day when I bought my 2311 I had a pioneer 1123k I tested along side the 2311 as well as a Yamaha and the denon clearly had the better fuller sound, better imaging, better dialogue and better fuller bass. So the other went back. Let me know what you guys think. Or if I should consider something else. Dts X/atoms seems like it would be wise to have considering my speaker layout with the two side ceiling so I believe I should be looking at units that support it. Once again let me know. Hope I gave you guys enough info. Thanks.