I would be very careful in moving to floorstanding speakers for a 10x15 room. My room is 13x15 and I've gone through four different floorstanders and three different monitors. All of the monitors were a better fit.
The danger is overloading the room with bass, along with losing imaging capabilities. You need to move floorstanders well out into the room to escape bass issues and enjoy proper imaging, and you likely don't have the real estate for that.
I've gone to Audio Note AN-J's and love the fact that I can tuck them into the room corners for extra space and due to their design get near the bass of a floorstander without any overloading issues.
YMMV -- Good luck
The danger is overloading the room with bass, along with losing imaging capabilities. You need to move floorstanders well out into the room to escape bass issues and enjoy proper imaging, and you likely don't have the real estate for that.
I've gone to Audio Note AN-J's and love the fact that I can tuck them into the room corners for extra space and due to their design get near the bass of a floorstander without any overloading issues.
YMMV -- Good luck