I have two pairs of Montrail Hardrocks, and each have about 300 miles on them. One pair is still in fairly good condition, as it has just been used for trails. The other pair, however, is in in crying shape. I use them on trips I plan on doing some scrambling/climbing, and so they wore down much faster (which is to be expected).
I'm currently experimenting with Merrell Trail Gloves, and so far I love them! I was told by a friend that they could possibly help sort out the aftermath of my knee issues (tore meniscus and MCL last fall), and so far I can run up to 3 miles and hike about 20 miles before I start to feel any discomfort in my knee.