NAD T785 HD Receiver and HT questions

Hi all nice to meet all of you. A friend of mine referred me to this site, he said this is where the experts speak!

I am looking for someone familiar with the NAD T875 HD Reciever. I do not have a dealer where i live nor anywehere close to me. I am looking at it, marantz, pioneer elite, and Denon.

The speakers I am looking at are the psb image line using the t65 tower system for the theater surrond system. I am also looking at the paradigm monitor 9 system as well.

My room size is 20'x 24' with a vaulted ceiling with a total of 4891 cuboic feet. Some advice is needed. What do you think about the receiver and the speakers? I am looking to spend up to 3700 dollars on the speaker surround system.

Thanks for any and all advice.