Although I haven't ordered it yet, I've finally decided on the base 15" MacBook Pro. I'm looking to find a decent speaker system to use with the computer. Speakers are for music and movies. I'm no audiophile, but my only request is something with a good subwoofer. Looking for two input (doesn't need to be digital or fancy, just RCA/3.5mm cables). Cheaper is better. No more than ~$75. Any suggestions are welcomed! Thanks!