I am not so sure about the 3 wheel concept, but the little Aebi mower unit looks pretty interesting. There is actually a dealer in Indiana, although I have no idea where that town is they are located in.
I keep looking at the PT422/425s, the Ventrac 3000 and the Steiners. I have been forced to eliminate the Steiner 230 and that takes me to the 415 and the 430, which are traditional looking tractors. No real reason to get the extra attachements, etc that the Steiner tractors offer, which takes me back to the Ventrac 3000 which seems the best suited for mowing of all of them. So I guess I may have just eliminated Steiner? At least they now seem to have fallen to 2nd Choice behind Ventrac.
I have serious reservations about teh PT422 for the hill climb, but the 425 apparently has higher torque wheel motors and I presume that would do the job. Still, the PT seems like a great tractor and an average mower. And I want a mower, so that puts the PT units in 3rd place behind the Steiners. But I admit to having a heck of a lot more respect for the the PT units now than I did before. In fact, I think I could evangelize about them to people who have the use for a tractor. They really are versitile machines.
The Ventrac 3000 seems like a great mower and a modest semi-tractor-in-a-pinch-but-only-if-you-have-nothing-better tractor. And as I have other equipment handy, then the modest tractoring ability of the Ventrac 3000 poses no downside to me. In fact, I am looking at it wishing that I had one with a mower deck and a snowblower, because it would do a better (easier on my neck) job blowing snow than the 60" rear mount blower I use. But I digress. I am looking for a mower for the wife. I want the best I can find so I don't have to worry for another 10+ years.
So who has an Aebi who can tell me more about those?