I have had my heart set on the PB12 Ultra/2 for ages and have just been saving up. I am kinda worried I am going over the top, will I really notice the difference/will my wife leave me/will I care? room is approx 6x6m with an open doorway into hall and open stairwell to 1st floor. We mostly watch movies at moderate-loud levels (damn kids!) Thanking you!