Looking for a good in-ceiling surround back speaker (s) to compliment my future setup (building HT in new home). My surrounds will be FXi3 or 5, my fronts are the RTi8 and center CSi3. I've got a PSW505 but want to sell to upgrade to a 20-39 PC plus. Any suggestions that won't break the bank? (I have to put in-ceiling because of room layout, and wife).