After today's price drops, I went to the Apple Store in Chicago to convet the Powerbooks. They still had the "old" ones on display, but I just wanted to fuel my excitement - I'm going to purchase a PB in the very near future. However, something gave me pause. For a long while, I was deciding between a 12'' and a 15''. I decided on the 12'' as I'm also getting a 23'' display which I'll use for the majority of my computer time. But when I'm on the road, I want ultimate portability. I walked up to the 12'', fired up GarageBand, then Word, all while a Incredibles trailer was playing. Not a very nice test, and the 12'' seemed to struggle a bit. However, when I tried an equivalent test on a 15'' with the same specs (same RAM, same speed, same HDD), it seemed to be quite a bit faster. The only big difference between the two that I know about is the video card. Would that really make the 15'' that much faster? I tried a second trial by closing everything, then timing GarageBand loading up. About 6 seconds on th 15'', 10 on the 12''. Odd! Any thoughts on why? Should I stretch the bank book and opt for the 15'', sacrificing the 12'' portability? I was assuming that the 12'' would be plenty powerful for my needs (no film editing, only occasional gaming), but now I"m worried... Any thoughts are greatly appreciated!