Hey. I've been wating to upgrade my iBook G4 1.33 for some time now. I was hoping to get a 15" MBP. With all the hoopla around the yellow screens, I'm thinking of actually getting a 17" with HD screen instead. Has anyone done similar, or gone from 15" to 17"? How do you find using it? I will use it daily on a train, and at night at home on my desk or couch. I'm not concerned with weight or price. Just useability of such a large laptop. Having so much screen realestate is appealling, but just not sure if it will be a pain in the neck/back/lap to use Thanks for any input.