Wow. Thanks for all the detailed and quick responses!

What is the (quality/performance) difference between dedicated and integrated videocards? I'm assuming the dedicated is "better" as it is in the Pro model.

The 15" Pro model does not seem so terribly big, and manageable for travel. Anyone with actual experience? Although I only need my laptop for about half the trips I take, when I do it has not been a big problem or nuissance. And at 14.1" the Dell I have isn't much smaller than the 15" Pro.

I am a huge fan a flexibility, however. That could sway me to the Pro (plus it looks so much better!). I know two people with a MacBook (regular) and they seem to have constant problems with connectivety and need special adaptors etc. to use projectors and the like (while my Dell loves everything).