I'm looking to improving the sound performance of my Mac setup. I currently don't have any speakers and rely on the audio from my Cinema Display. The sound it puts out is pretty good (better than my MacBook Pro), but I'm sure I could get better. I listen to a lot of hip-hop/rap and club/party music, so I'd like to improve the bass quality. One of my first thoughts was to buy a BassJump from Twelve South (http://twelvesouth.com/products/bassjump/). It's a portable, good looking subwoofer. I've heard nothing but good reviews. But, I'd like to hear what other users have to say. Should I get the BassJump (it's only $70) or buy a complete sound system? I'm not an audiophile and I don't do any professional sound production, just casual listening.