IME they do 'hold up' very well generally. I know of many egs where they're very 'well used', including by heavy duty(miles as well as terrain-wise) trail riders & endurance riders, and are indeed strong boots that stand up to a lot. I think they're about the best in this regard.
I can actually believe it is possible to trash Easyboot Epics in 3 weeks. I have had some Easyboots that I wonder if they changed the recipe of the plastic or something....like a few hard rides and I have small chunks missing from boots. Some will wear for years and years and years, and some have chunks missing after a few rides......chunks that go all the way through the toe of the boot. Either the trails were exceptionally horrible or the plastic on those particular boots was softer for some reason.
I also had some Epics this past summer that both buckles broke in like 2 rides in the rocks. I DO ride in a lot of rocks in the summer. But hey, that's what the boots are for, right?
Because the boots were brand new and Easycare has great customer service they replaced the buckles for me. I think it was a design flaw of a newer buckle design because once those were replaced I haven't had an issue with those boots since.
I would really love to try Renegades because of the easy-on, easy-off design. My horses have more round feed and it can be like hell trying to get boots on and off most of the time. (And if I go up a size they are too big, go figure!) So I actually have to rasp the sides of my horse's feet pretty regularly to keep them fitting in Epics.
One of these days I will try the Renegades or the Vipers. Is the plastic on the Vipers tougher than that of the Renegades? It seems like I might have heard that somewhere but I could be wrong.