polk audio monitor 25c two way center channel speaker

I'm moving in to my first home and my wife and I love to watch movies and listen to a lot of music. I want sine opinion from some professional. [ ] Sony STR-DH740 7.2 Channel 4K AV Receiver For $260.00 [ ] Polk Audio Monitor 75T Four-Way Ported Floorstanding Speaker Cherry For $470.00...

I know Polk doesn't get that much love but the Polk Monitor Series II are the only speaker line I have known and I have been pleased (ignorance is bliss, right?), but the internet has told me I can do better. I have a 7.1 system right now: Monitor 75Ts - fronts Monitor 25C - center Monitor...