I was basing my recommendations on 'heavy' work pickups.
Haven't heard of any Cooper blowouts.
Our F350's go 10k up to 14k loaded and knock on wood never had a tire let go(lately).
One time about 10 years ago and that was with a highway type Michelin.
And honestly I think you would have to really cheap out to find a chitty tire.
I agree with sam on the last part. I ran a set of the Cooper STT's for a few years and they are good tires. Don't wear quite as good as the duratracs, but the OP is looking for something better than the druatracs I believe. My list of suggestions would look like this in order of what I'd personally buy for my own rig:
1. Goodyear authority
2. Goodyear duratrac
3. Cooper stt
4. BFG all terrain KO2's
5. Toyo open country mud tires
Too bad they don't make the Kelly safari MSR anymore, as that was one bad azzed long lasting great tire...