Hi All - I'm using a 15" Core Duo unibody MBP. I've been thinking about moving to a MBA for sometime. Here are the reasons I wanted to switch: 1. The bottom of MBP gets SO hot sitting on my lap. In my opinion, it's unusable on my lap because of the heat factor. 2. I RARELY use a CD or DVD. Except for occasionally ripping a movie I never need it. 3. Weight. It's got some weight to it. 4. I don't need that much speed for what I do. Lite video editing, photo editing. Otherwise it's database management, email, safari and the usual delights. I do have a 1T HD that I would miss. But, I would keep itunes and iphoto libraries on an external HD and probably be just fine. So, just wondering from people who have made the move .... any regrets? Anything that stands out as fantastic you discovered about the change afterward? Anything that stands out as a bummer you discovered afterward? I will appreciate any comments or advise. Thanks!