These boots are a breath of fresh air. I came into these from a pair of Georgia loggers and let me just say, there is no comparison. This is a top notch boot, from A to Z.First, the break in. I walk 3mi each and every weekday; that is 15mi a week. These boots were never very hard on my heels or feet, but they did rub while the broke in. This pair took 1 week, or 15mi, to break in about 90%. I did get a couple blisters, but nothing bad or painful. After the first week, the second was just a little more stretching to perfectly fit my foot. Overall I give the break-in 4of5 stars.Next is the comfort. This boot has it! A very soft insole is included. I usually buy an aftermarket insole because the included ones are usually pretty full of suck; that is not the case for this Ariat. I gotta say though, I don't think it is the soft insole that makes this boot so comfy. I literally feel like my step is corrected to near perfection when I walk. Not really sure how else to explain it, but everything just feels right. This effect is so desirable that I am probably a life-time customer now as a result of just that factor. My guess is that this feeling is the result of that carbon-fiber forked shank and a new design on the outsole, combined with the EVA mid.Toughness is so far so good. the full grain leather will scuff easy, but that should be expected. It does work into a fantastic looking piece of leather over time. All the stitching is rock solid so far with no signs of wear. The sole is dirty, but not worn down. Just a hunch, but I think this sole is going to have to be replaced in 6mo or so; it doesn't seem to me to be tough enough, but I could be wrong.Overall, I would instantly, without question, buy this boot again and will do so if I ever need to. I'm very glad my friend wasn't able to successfully talk me into a pair of Justins; these are exactly what I want in a boot.