Moss
Several reasons for moving the Cub Cadet out of the favored mowing position and picking the Ventrac (so far).
The Cub is a good mower for most areas, but doesn't turn quite as tight as I'd like.
It gets the job done, but not as well or as fast as something else better suited would do it.
I figure I have a couple more years left in it the way I push it. It really strains on the hill side.
I have money to spend this year, I don't know if I'll have $10,000 sitting around in 2 years, and I only buy what I have cash on hand for so I would never consider financing a car, truck, tractor, mower or other toy.
I have need for the snowblowing capabilities of the Cub Cadet at my office. Using the Cub as a Snowblower will extend the useful life of it for another decade or more with modest care.
I have a flat grass field behind my office that is about 1 acre, it needs to be mowed twice a year. The Cub can also take over that duty with ease.
The Cub tears up the grass on my slope with the wheel slippage, even with wheel weights & tire chains.
4 wheel drive articulated units won't tear up the grass.
Slope mowers are more stable than the Cub on my slopes and designed to climb the hills.
The Ventrac has an extremely tight turning radius and will mow around the landscaping without doing the drive-in-then-back-up and drive-in-to back-up manuvers that the Cub Cadet has to do (which also tears up the yard and also is a slow process for mowing around tight radius curves).
The Ventrac is about a foot shorter than a PT425 saving me garage space.
The Ventrac 3000 has a tighter turning radius than the PT425.
The Ventrac costs about $700 less than a PT425. (Plus delivery cost savings in addition to that).
Now if the PT422 could navigate the slopes without wearing out the wheel motors, that would tip the economics to the PT units, but as has been discussed, it uses smaller wheels and lower torque wheel motors and MIGHT do the job, but if it does, then the question would be "for how long" would it continue to do the job? My Cub does the job of mowing the slope, it just does it badly . . . but that is better than the John Deere's we tested that wouldn't even climb the hill!!! All that said, I have not tested a Ventrac yet, if it fails the slope test then I'll probably start the process over, but it will probably be limited to the Steiner & Ventrac traditional style articulated tractors because there is no doubt that those will climb the hill and mow the lawn, they just cost more and won't mow quite as quickly as the Ventrac 3000, which is designed more as a mower than a tractor.
Despite the fact that I am spending a lot of money for a lawn mower, I am known for being frugal, because I only buy what I need and only when I can afford it. I will continue to use the Cub, but in a place better suited for its capabilities, and without the need for a restoration job. I want to cut down the time spent taking care of my property, so the right tool for the right job seems like the right answer to accomplish the job, better, faster & safer.
So that is my logic.