I have one pair of "muck" boots for working with cows that I wear daily, and and two other pairs for hunting (snake proof and cold weather). I wear my hunting pairs 2-3x per week, and put 2-3 miles on them each time I'm out. I much prefer the slip on style of boot.
For three years I used LaCrosse exclusively.
I've never had a pair of LaCrosse last longer than a year. Usually it is a separation somewhere at the heel that let's water in. Their thinsulate models usually start losing the liner somewhere around the 3rd month.
Switched to Dryshod this year. No issues *so far*, but it is still too early to tell. They are less expensive than LaCrosse, so if they only hold up as long ill consider them a win.