I've been using my MacBook Pro as my source along with a Havana DAC for about a month now. Last night I hooked up my mom's MacBook (white) to compare and thought it sounded better...noticeably more detailed yet relaxed...dare I say analogue. I've come across a couple of references suggesting the MacBook is quieter than the MacBook Pro. I'll have to spend some more time with the MacBook to verify my initial impressions. I'm looking to get another Mac to use only for music and have determined a laptop will work best with my current setup. Any other experiences comparing MacBooks? White vs. Aluminum, MacBook vs. MacBook Pro...