RD, on your latest question, since your M60s will probably be no more than 10 feet or so from the receiver, the 16 gauge Monster is plenty(although grossly over-priced). On the use of the Bose, because of the somewhat different construction it'll be unlikely that an integration with the M60s would be very satisfactory, especially for the center. You haven't described what crossover provisions your Sony has, but having the M60s handle all the bass and crossing to the Bose's at 150Hz or higher might give fair results.
