What is a good phone?

I have AT&T which was formerly Cingular and I am looking to buy a new phone. I was looking to buy the Boulder which is only for Verizon I think. I want to buy the most durable and rugged phone I possibly can that AT&T carries. Such as shock resistant and water resistant and ruggerized. Please tell me of any phone you know of that is very very durable and rugged that you can still buy form AT&T. Thank you for your help. By the way the person who can name the most rugged phone available on AT&T gets the best answer regardless of information given.