Ive tried alot of different trail runners, and my favorite by far are the salomon XA pro 3Ds. They are not the lightest option for sure, but they fit me flawlessly, dry quickly, and have a unique kevlar lacing system. they have never failed on me, but for insurance, i get a new pair every 300 miles or so. For my next pair, which im coming up on soon, Im going to try out the salomon S-Lab XA3s, which are essentially the same shoe, but with a built in gaiter. They were origionaly designed for the salomon adventure racing team, but salomon just reccently put them on the public market.
Salomon S-lab XA pro 3