Lowa Hunter GTX Evo Extreme. Primarily used for fall elk hunting in Hell's Canyon. After years of getting by with Irish Setter, Danner, and Rocky boots, I finally took the plunge. I'm glad I did as these have proved to be my favorite boot to date. Although heavier and stiffer, I have no trouble hiking all week in them, they keep my feet warm and dry (multiple creek crossings), and they especially excel on steep rocky side hills. I have a narrower foot, so the Lowa's fit nicely. I've had zero issue with heel rub. I haven't worn Kenetrek Mountain Extremes, but many of my buddies use them and most seem to have issues with heel rubbing. Could be just the individual fit for each, or other factors such as socks, insoles, and/or lacing method. I'm happy with my Lowa's so I'm going to stick with them!