How much of a difference is there between the 2? I would be looking for a good music/HT set. Could I just run the 250's with a sub and be no different then the 360, or are the 360's that much better to justify the difference in price? How do 5 1/4 speakers compare to 6 1/2 speakers? And should any surround sound speakers match the fronts? ie a surround with a 6 1/2 inch speaker with the 360's? Or can a 5 1/4 surround work just fine?