84 has great genetics but this past winter there was more snow there than I've seen for years. Could be some pretty bad winterkill. A large chunk of 84 is checkard-board with poor public access. There is only limited access for guided only hunters on several of the ranches. The last time I checked the biggest ranch didn't even allow guided hunts. That was quite a few years ago and maybe have changed? With only small parcels of public to hunt you can imagine where the biggest bucks tend to get spooked and hang out. The deer in some of that area tend to migrate somewhat out of their summer ranges so that can also be a twist on hunting the unit.
89 has quite a bit of private and also some chunks of public. Some of the HMA's haven't had deer on their species list so any public that is land-locked by private in the HMA is off limits to deer hunting. There is a large ranch in the center of 89 that has only limited hunting pressure so you can guess where some of the smart ole bucks hang out. I don't think the winter was quite as bad as in 84 but it still was far from a "mild" winter. If you want to talk things over in more detail send me a pm.