Folks, here is my dilemma. I have a Sony HT in a box system. I bought this 4 years ago without doing any research into HT systems. I'm in the process of building a dedicated HT room just for sat. tv and dvd's....I LOVE pounding bass..but the 100 watt 10" Sony sub I have is not cuttin it. Question #1: does room size play a part in subwoofer performance ( I heard that if the sub is to powerful it may sound worse than my current sub) and Question # 2: Any recommendations on a good quality sub that pounds out the bass, but won't give a pounding to my bank account?