I love my Mountain Horse Boots - I am 100% sold on them. I have a pair of Ariat's and I dislike them. They have been on my stair case for sometime now, covered in dust, dog hair and my Ferrets love playing in them when they get the chance.
To the comment about Zip Up Boots offering less support and come off your feet easier.....that's PTHPTHTHP. I've never encountered that or heard of that. I have zip up's and pull on's and I find no difference between the two, and if any of the 2 boots come off when pulled, it's the pull on's....cause, that's what they do...the pull on, and pull off. My Zip Up's, I cannot get off, unless I zip them all the way down, like you're supposed to.