Moving into our first house soon and wanna get some new equipment

Our room is 11' wide and 15' long, with hardwood, 55'' TV will be mounted on the wall around 12' in front of us and I either want to hang some shallower speakers on the wall, or get shallower floor-standing ones.
It will be for movies mostly and I like smooth, softer sound, nothing too harsh and crisp.
Right now I have Polk RM6750 in my room and they're great, but it's in a bedroom.
I'd love to have speakers that are no more than around 6'' deep, the TV will be recessed into a wall a little bit, so a deep speakers will look really awkward.