Just got my 15" 1.5ghz in yesterday. Huge upgrade from my 800mhz 12" iBook. Though I love the portability of the iBokk (I'm keeping it around for just that reason) the screen in this thing is pristine and AMAZING! I currently have just the stock 512meg mem (Will be upgrading to 1gb) and it runs beautifully. I also can't believe how easy it was to transfer everything from the iBook to the powerbook, just hook up a fw cable whe I first turned on the pb and BAM it's all there. Needless to say, I'm more than pleased with the machine thus far. Now to find more cool free software I don't really need =P
-Zoidberg