>>871995I used the Kyocera Plus and the Samsung Rugby Pro/non-pro all to varying degrees of success when I was a bike messenger. They were fine tough phones, I liked the Kyocera best. All of them were kinda slow, and had little annoying problems that you could deal with but were always there. The trouble is tough phones haven't gotten much better, nor have their prices dropped much.
What I do these days is roll with a used iPhone 5. I usually don't worry about a case, but if I'm going hiking I put it in a decent case and throw it two fresh zip locks w/ silica gel and sometimes a paper towel. If I don't have silica gel I put a little dry couscous (rounder than rice, doesn't wear the bag out as fast) in between the two bags.
If you're set on buying something and not worrying bagging it ect. I'd look into cases (otter comes to mind) rather than specific phones.