I'm a college student in the market for a ~150 subwoofer, until I stumbled across someone selling an Energy Xl-S8 sub for 200 (maybe lower, don't know yet). I read this forum quite often, and everyone seems nice and very knowledgable on products. I need to know how this sub performs, and if it's worth spending an extra 50 dollars, that I might upgrade my computer with. Also, I've heard a lot about the Sony subwoofer, in my price range...are there any subs I should look into, if this isn't the one for me? Much appreciated, thanx.