What are you using to drive them? Have you heard either? Both would be a decent set up. Polk puts me off some by using such small drivers. I have not compared them side by side nor with the same equipment. With that being said my impression is Polk would be a warmer sound with Paradigm being more extended and have more detail. You are the one who has to listen to them all the time and you narrowed it down to 2, so go give them a listen and buy the one you enjoy the best.