Ok, I'm going to buy a sat system for three season porch. We will be primarily watching TV and the occasional movie. Since the room is quite small, I want to use wall mounted Sat. speakers. Also, I would like to keep the speaker cost to $500 or less. Currently, I'm thinking of the Polk RM6750 or looking for used Boston Acoustics 90X speakers. Any suggestions would be appreciated. BTW, I will most likely use a Dayton 10" sub.