Hi. I'm buying a new MacBook on Tuesday but just can't decide whether or not to get the MacBook or the Pro. I know what specs I want so that's not a problem. It's just that I'm not sure whether moving up to a 15" from my current 13" MacBook will be a big disadvantage regarding portability. Could anyone who has gone from a MacBook to a Pro or someone who uses their Pro and takes it with them a lot please let me know on how they feel? Is the MacBook Pro really that much bigger than the MacBook? Thanks.