I have used an iMac for a while now and I love it. I'm going back to school in the fall and I will probably want more mobility and I'm planning to buy a MBP to take with me. I'm wondering what's the best way to sync the machines? The options I could think of are mobile me or an external/wifi harddisk. I realise they're two completely different beasts, but I'm wondering what you guys are doing. Thanks!