Just wanted to vouch for my 15" Powerbook. This is the best computer I've ever bought though it was damn pricey. It was like the empeg. I was leary at first but now know it was worth every penny. The old "it just works" adage is very true with OSX. It still surprises me all the time with things that you'd expect an OS to do, but have learned to not expect them by using windows. Little things like that battery swap mentioned above, it's wireless networking slickness, bluetooth slickness... all kinds of slick. I've been using Virtual PC lately for any PC only apps I need (like Garmin Mapsource) and it works flawlessly and surprisingly fast.

Only downer is that with the lates OS upgrade, half of my RAM suddenly disappeared. I can't find any info on it except on Macfixit which is a pay site. I'll be calling Apple as soon as I get home. According to the few posts I have found about it, they swap the logic board and you're good as new.