I'm slowly upgrading my system and am looking to upgrade from my Polk audio monitor 40s and matching centre to potentially KEF R300 or MA GX100 or B&W CM5 the rears are currently B&W m-1 but those will be replaced at a later stage too. I'm running a yamaha rx-a3020 and have a MA GSW12 sub and my listening area is about 5m x 5m although its an open plan area of about 11x5m. My preference is bookshelves from an aesthetic point of view but I do have space for floor standers if there is a worthwhile gain. 80% of my time is focused on movies so music is not as important. Any suggestions welcome