Hi guys, I'm a Newbie when it comes to HT systems. I just purchased a Sony 65 930e that I'm very happy with. I plan to dive right into a high end system so I decided on ascend sierra 2. My question is will a 5-6 hundred dollar receiver get the most out of the sierra 2's or do I need to get up into the 1000 dollar range to get a noticeable difference? Please advise and also some recommendation on specific models would be helpful. I'd like 7.1 capability. Thanks!