i don't understand why some people would long for 12 inch ones when macbook is 13 inches. don't tell me 1 inch will make that big of a difference.
That 1.3 inch is a huge difference, actually. When you are walking around a city every day and needing to stash your laptop in your bag, the larger MB gets annoying fast. The smaller and (lighter?) 12" is much nicer.
Further, the MB case design is not something that appeals to me- it's great for some, but the aluminum housing of the PB can't be beat. And, there is no way I am carrying a 15" laptop around in my bag.
The 12" PB is a wonderful laptop, and I would go smaller if apple made it (hi-res 11.4 widescreen?) As long as the resolution is high enough to do work on, I am happy