Okay, so i believe my complete system should be located on my sig. I recently Purchased a sonos to upgrade my Stereo end. I did notice a good bump in sound quality. I still find myself unsatisfied. So im thinking of making my next upgrade into a pair of mains. Now i know this is a polk forum, But i would appreciate an honest response about Polk or other brands in the price range. Maybe dedicating a 2 channel amp to better power my M70's ? I'm Just unsure of the next step to take.