I also saw some pretty low reviews on these machines some years back (early 2000s). I had an ARGO 8x8 (same skid-steer style) back in those years, and while similar in concept, it was a pretty good machine for certain purposes - think swamp, bogs, snow-cat (with wide tracks). It was much less competant or comfortable on hard ground. Back in the '60s, there were quite a few 6x6, fiberglass hull, two-cycle powered units that were sort of the forerunner of ATVs. They gave way to modern ATVs for a reason though, one of which is they would beat you to death after an hour or so on rough terrain.
We sold the ARGO and got a couple Polaris Rangers (side-by-side ATV) and like them MUCH better. Still have two of them. Versitile, comfortable, easy to drive, FUN. Do not think the Hunt-Vee would even come close as it is much cruder than ARGO or MAX, about the only modern 6x6 or 8x8 of this type.