Thanks in advance to all. I have a final rev PB 12 (1.5GHz PPC G4, maxed out RAM, etc.). I love this machine--if only they would make the same form factor again. So I'm thinking pretty seriously about upgrading to a new notebook. And my choices are a clearance BlackBook in the final revision, or a new MB13. The price difference seems to be around $330 (since I need to buy a new display adapter). I don't do lots of video/photo editing, mostly iPhoto and some basic Photoshop, but I do quite a bit of statistical work (R, Stata, that sort of thing). I watch the occasional downloaded movie or DVD, but much of what I do is pretty typical academic user stuff (I'm a near-end Ph.D. student). So what do all of you out there think on the matter? Any thoughts on how I might go about thinking about this?