I just took delivery of my Panasonic "semi rugged" Toughbook (model 52). First thing I noticed was that the screen is readable in full sunlight and the keyboard feels great. Since I use a laptop in the field (usually by the side of a busy highway at an equipment cabinet) this issue is huge with me. I checked out the Dell "tough" laptops and a local company purchased 12 of them for under $2200 each, they are really nice but I like my screen way better.
As far as Havens comment that you get an $800 computer in a $4000 package, you are pretty much right but for those of us for whom a failure results in holding up a crew of electricians, a crane at $1000 an hour and running over time means the ministry is fining some company at $1000 per day, my $2100 was well spent.
The main reason for my "Toughbook" purchase was the built in serial port.There are lots of things out there that use serial ports and always will. The usb to serial dongles out there infuriate most of our staff. They work with some programs and equipment but not others. There is nothing like wasting a day trying to communicate with some piece of equipment and realizing the problem is the serial converter. Anybody want a box full of them, all types and brands?