Well, since August '07, I've had the MB 2.16, went to the BlackBook 2.4 Penryn, then to the MBA, back to the BlackBook 2.4, then to a MBP 2.2 and I'm still not satisfied! Little bit on the dizzy side, but without the MBA. Yep, the lack of hard drive space was the biggest factor, on the flip-side, the transportability was awesome. Best lookin' computer I've ever owned, but needed the MBA to do so much more than sit there as "eye candy!" I'm waiting for the next MBA release and goin' "top shelf" and grabbing the top of the line MBA in August '08!