I used to wear 5.11's. Comfortable and lightweight. Went through one pair every 6 months or so. Maybe a little longer.
Coworker wears magnums. Goes through one pair every 3 months and hates them. He's currently looking for another brand to try.
I am currently trying Original swats. I like them so far. 6 months on them and still going. Had a definite break in period for me (one to two weeks).
I also have a pair of Matterhorn that I've had for years. Replaced the sole and still good to go. Not really a "running shoe" build and has no side zip option though. I imagine Danners are about equivalent as another of my co workers wears them and they look very similar.