I've run a good bit of trail miles on my MT20's. They were my first minimalist running shoe and being so I was unaware of what I really needed to run well and effeciently on MY trails. I had not realized that my local trails are pretty technical, being in Southwest Georgia I didn't figure I needed a beefier shoe than some folks in more mountainous areas. That being said the MT20's while a great shoe were much better for some of the FEW groomed trails I run, not for the extremely rocky terrain I frequent. I had some mild bottom of foot pain and achilles soreness when using the MT20's on said trails so I swapped to the MT110's.

Incredible shoe! The rock plate and heel cup made a huge difference! The traction was far superior and the synthetic upper sheds water and wipes clean after each use, though it can easily snag branches if you're not careful. Just stop running immediately if you catch on something. The shoe drains very fast and dries fast aswell. I run straight through small streams, not even bothering to rock hop, and just 30 mins or so later during the run the shoes are pretty much dry.

Going sockless feels fine, without any irritating lining or what not. No blisters yet. Though I did get hot spots around ankle were the more supportive heel cup rubs, but that has decreased after breaking them in a bit. The only real negative I've got is the foam mid sole. It has completely broken down after 30 miles or so. Not a problem because I'm mostly a forefoot striker, but the tread on the rest of the shoe is so awesome it's a shame it was not continued througout. I realize they cut shoe weight and increased flexibility by using foam there, but I would prefer the extra ounce or two as it would make the shoe more durable.

Update - After less than 200 miles the outsole is on its last leg. EVA midsole foam was crushed after 30 miiles no big deal, but once it was no longer flush with the durable yellow rubber that rubber started to peel away. I'm taking two stars away from the review. Let's hope version two has a continuous rubber outsole.