I'm planning my basement home theater right now. At the back wall, I intend to put a single center rear speaker for 6.1 surround. Is there any concensus on what speaker type is best - i.e. dipole or direct radiating? Does it depend on what I have for side surrounds? Currently I have direct side surrounds but I'm planning to go for dipoles. If direct is recommended, should I match the front center speaker or is that overkill? Thanks.