Well, I've made up my mind. I'm sticking with the MX5100 HST 4x4. Enough back and forth on this and that. I've committed to it, and it has a good number of advantages that I really like. And the money wouldn't quite be the same on the 1754.
I paid for $28,000 for the MX5100 with SSQA loader, two rear remotes w/ float, loader diverter valve, filled tires, and a 6' box blade. Probably more than I should have paid, but that's water under the bridge. Now, I just can't wait to put it to work!
If I end up slicing open a sidewall on the R1 Ags, I'll just go to 8 ply industrials, at least on the front.