Ok Ascend People... Need some recommendations.
I currently have the older 340s across the front and the older 170s for rear and a HSU 2 sub. I have been pushing all of them with a very old Onkyo TX-DS656 receiver that has and still serves its purpose extremely well. I'm currently looking at upgrading to something that might make my Ascends sound better (if that is possible). My budget cap is about $700 and I don't know if i'm interested in separates. I know everyone says that you need to listen to each receiver and see what you like, but I live in a very small town with absolutely no sound stores. So I want recommendations. Help me out.

Thanks in advance!