RJ,
I think that you got a real good crossection of replies from all these guys. Im not sure if I even should reply to this thread because I have never owned a hydrostatic tractor.
I have two vintage tractors and one more modern, 1986 MF 4WD with loader that I use as my work tractor. Someone brought out the point that the hydrostatic is the way to go on loader work. I would have to agree with that point, easy operation from foward to reverse! For me, its really not that big of a deal. I mean really how much loader work can I possibly do on 10 acres ? I even do some work for my neighbor on his 30 acres and dont find it to be big deal. If I was using that loader all the time, Im sure my opinion would change.
For me the big item was the price tag!!! I bought a 32HP, 4WD, deisel with 1340 hours on it for $6000. I couldnt afford a new $20,000 machine.
As far as operation on hilly terrain, I think Im qualified to respond to that question. I have about 8 acres open meadow that I mow about three times a year. The lower part of my property is steep, I mow up and down the hills on that section rather than crosswise, and I have always felt safe doing so. I mow in mid-range 4th gear about 3.5 mph in that section without a problem. As Soundguy stated, if something should go wrong, I have my FEL to lower and also my throttle control is right next to the steering wheel. If someone became so flustered to not use either of those aids in slowing down, then they shouldnt be on a tractor to begin with IMHO.
scotty