I dont have personally experience with them, but ive lusted after a 2860M power shuttle for a few years...
The power shuttle excels at loader work, moving stuff. Despite the common wisdom, I think its actually superior to hydro for grading, loader work. PTO work, the hydro allows that infinite speed control, while running at the 540 PTO. So, its a use case question.
Power shuttle is awesome for dirt work, cause you add power as you want, like going into the pile, very naturally. The hydro, your running WFO all the time, but the PS, you drive in, peddle in till you slow, lift the foot, and shuttle to reverse, and peddle down again. To me, its just the "natural" way to run dirt engaging.
Running wide open is exactly why I don't really want a Hydro....