Am I the only one who likes 17" laptops? I miss my old lunch tray.
I can't ever imagine using another trackpad with physical buttons though. Just extend the trackpad over the space that the button would have taken up. I should be able to left/middle/right click anywhere on the trackpad, not move my hand back to the button to click.
(No first-hand experience with any of those.)
(Updated: to add more models.)