Amping up my system

I have a Pioneer VSX-1019AH.

I just moved into a much larger house. The room size this is going in is about 18-20' X 18-20'. This room is open floor plan to the kitchen and stairway.

The receiver is a very good one,at least it was when I picked it up 2 years ago. I would like to keep this a great system. So, what I am asking is what are some good wall mount speakers to go with?

I want higher end speakers nothing cheap. I will probably start with 2 fronts and a center and expand from there as I know it will be expensive. This system will be used for TV, movies and games.

Thanks in advance guys.

Sorry, big thing to omit.

No budget per say, but I would like to keep the fronts and centers cost around $500-$800. I guess in your guys eyes that is more lower end. I have forgotten just how broad of a range of price and quality there is in speakers. I would like to keep the price down just so my wife doesn't kill me in my sleep.

Those in your link are beautiful.