I can give you my advice, having just purchased a refurb 2.13Ghz Macbook Air with SSD a week ago. My other Mac is an Oct 2008 unibody 15.4 inch Macbook Pro, and honestly, I love the Air already far more than I ever did the Pro. Yes, "spec-wise" the Pro has the Air beat in almost all areas, but the true beauty of this machine comes through when you actually have one and use it for a while. I haven't touched the Pro since opening the Air, and don't think I will, honestly. As long as you have a more feature filled (optical drive, more storage, etc) main computer (my work computer and main home computer are Windows desktops), the Air seems to be all MOST people need for on the go computing. It's night and day better than all the netbook "toys" I've tried out so far in attempting to find the ideal truly mobile solution. It's fast (super fast with the SSD), light, and slips so easily into any bag I'd already be carrying anyway. Not to mention the AC adapter is minuscule as well. The whole thing is amazingly portable, but even more importantly, USABLE...something I found all netbooks not being. Same keyboard as the 13 inch MBP, same size screen, but the thinness makes it disappear in any bag I'd already be carrying for work. And I was like most people that haven't used the Air, I said "overpriced for what it does/for its specs", etc. But I decided I'd try it anyway, if not, I could at least sell it, but I can already tell that there's NO WAY I'd get rid of this machine, except for maybe a future generation Air. I never felt that way about the Macbook Pro, and honestly considered getting rid of it for a "more powerful" Windows laptop. But I'm hooked on the Air. I think the biggest thing is that it doesn't function as a main computer as well as a MBP would, but if you have the funds, and want what I feel is the best solution for a highly mobile SECONDARY computer, the Air is the best product right now.