Does anyone have experience with the Panasonic Toughbook W2? What is your opinion of it compared to the IBM Thinkpad of comparable weight? I want an ultralight rugged computer with a decent keyboard, a reasonable size screen, and good battery life - and this seems to fit the bill. I've just seen a friend with one today, and on first glance am lusting after it. It's a pricey little toy, over $2K. Is it worth it?