I wanna replace my Sony STR-DA3600ES receiver that im using as a pre-amp with my Outlaw audio 7125. The sony has been nothing but problems with audio dropouts occurring everytime i play a blu ray disc. Its very annoying. All my speakers are all Polk Lsi series, which are all rated at 4ohms. Will I see any benefits from upgrading to the 7007, which obviously has more features than the Sony?