I am finally adding a rear center surround speaker to my 6.1 capable system (Marantz 7300). My question is; should I add a rear center that matches the side wall, soffit mounted Jamo dipole speakers, or, try to match to the L, R, C front speakers which are made by Mordaunt-Short? It seems to me that most 6.1 capable DVD's would have "like sounding" effects In the rear and center surrounds. I use my system for 90% movie watching, 10% music. Thanks for any advice.