Looking for a pair of surrounds for 5.1 now, while looking to upgrade to 7.1 in the future. Which is the best route to take? Dipole vs. Monopole. ADP vs. Studio 40s. I want to stick with Paradigm Reference with Studio 100s for fronts, CC-450 center, and Servo-15 sub. Used mostly for home theater, about 70% HT and 30% Music. Any thoughts or experiences would be appreciated.