The room is 21' x 12' and the ceiling is just over 7' high. I have my TV placed against one of the 12' walls. One of the 21' walls is VERY open (in fact, there isn't much wall between the rooms at all) to another room of what I guess would be the same size. I have the subwoofer placed a little bit ahead of my front speakers, against the left wall. It's around 9' from my listening position. I'd like to be able to feel the low end, but I'm not looking to shake my room or anything.
I know my room isn't exactly ideal, but this is the room I'm given for this stuff until I move out next year. From how I described my room, I think the PB is probably the obvious choice (though I could be wrong, I'm not as educated as I'd like to be when it comes to home theater speakers), but the problem is that I want the detail of the low end sound for music, which from what I understand so far, the SB is good for. I'm a bass guitarist myself and I play a bit of drums, so it's something I tend to notice a lot. I still want the feeling and the lower sounds for movies though, so I feel like I have to choose between one or the other and can't get the best of both worlds. What is the PB like for music?
EDIT: I forgot to mention, size doesn't really matter. I don't want something huge, but I'll have no problem fitting a PB if I have to. Also, I probably watch TV, play games, watch movies, and listen to music a little bit louder than the average person, but nothing crazy loud. I've had neighbors before that if I went outside of my house I could hear the music from inside of their house pretty clearly, and I know I don't plan on having it loud like that.