Are you a contractor who measures phone life-expectancy in weeks? If you need a bulletproof handset (maybe literally) with extreme battery life, I think the CAT S41 is definitely worth considering. You might just want to wait for a sale.
Those working in challenging environments, passionate about the outdoors or just really clumsy should instantly embrace Cat's latest rugged gadgets.
It's late, but it's still impressive that the rugged, nichey Kyocera DuraForce PRO Android smartphone reaches T-Mobile after Sprint, AT&T and Verizon.