Hello. I am FINALLY upgrading my receiver, and on Monday I will get my Denon AVR-4810ci. It has the ability to do 11.1, but for now I think I will try a 9.1 system. I currently have a 7.1 system with all Polk RtiA series speakers except the fronts, for which hopefully I will upgrade later this year. I am looking at purchasing a pair of the Rti A1's for the front height speakers, but will probably need to use a mount in order to point them slightly down towards the listener. I have never purchased a mount in my life and thought maybe someone might have a good match for these speakers. Thanks!