If you want a durable laptop, get a Lenovo Thinkpad. I say this because I had mine in my backpack when I crashed my 500 last week, and other than a tiny crack between 2 ports, it is perfectly functional still.
They may be slightly tougher than the rest, but stinkpads are rubbish in all other respects. And their toughness is also gradually degrading over time. Lenovo is pumping out some real shit lately, we get them at work here.