I have to agree with agjones. I've owned PT's for over 15 years. Currently, I have a Kubota L3901 tractor, Kubota ZD-1211 zero turn, eXmark Lazer Z, and Power Trac 425 and 1845. I also have many attachments...mower, brush cutter, tiller, post hole digger, large bucket, small bucket, grapple bucket, 4-in-1 bucket, blade, wheel trencher, lift boom, forks, mini-hoe, potato digger, utility grapple.
IMHO, Power Trac is great for maintenance use. It excels at bucket work on lose materials and doesn't tear up the yard. The mower isn't as good as a zero turn but it's close. On rough terrain or hills, it's better. Having all attachments out and front easy to see great...as is the quick attach set up. The basic design is MUCH safer than conventional tractors. I've almost turned my conventional tractor over twice and I'm very careful. The local Vet got the sleeve of her shirt caught in the PTO of her tractor. Not pretty. Turning over and PTO dangers are seldom a worry with a Power Trac. I've had limbs hit me in the head on a conventional tractor but not on the PT with it's built-in canopy.
Another feature with Power Tracs that most people don't mention is it's use for minor duties. For example, the 425 is similar to an ATV in that I can jump on it and run anywhere quickly. I'd never crank my tractor to carry the garbage cans to the curb or run over and see the neighbor.
On the other hand, a Power Trac would not be my first choice for any heavy ground engagement. Want to plow a garden, use a conventional tractor. What to build a road in tough terrain, use a mini-x. Want to dig out a pond, use a trac loader. Even with my equipment, I've rented a trac loader and mini-x in the last year. A Power Trac could have done those jobs...but so could a shovel. Time plus wear and tear on the machine is the issue. Using a 425 to dig out a basement is possible (it's been done on this site) but not advisable. I respect my machinery enough to stay within reasonable limitations.
Some people say a Power Trac is like a swiss army knife. I don't quite agree with this analogy. In my experience, a swiss army knife will do a lot of things to a fair degree, but won't do anything well. It's better suited to emergency use or "I don't feel like walking to the shop and getting the proper tool" use. But Power Trac will do some things really well (bucket work, mowing, basic lifting duties with the forks or boom pole), some things moderately well (post hole digger, wheel trencher, potato digger) and some things only fairly well (tilling, blade work, digging with the bucket).
If I could have only one machine and lived in flat country, it would be between the 425 and a Kubota BX for home owner duties. I'd probably stick with the Power Trac. In any type of rough terrain, I'd definitely go with the Power Trac.
The Power Trac is not as well built as the Kubota. The hydraulic filtering is much less sophisticated and suction based (not ideal, especially in cold climates). It's single speed, a compromise between ultimate ground engagement power and travel speed. The lack of a dealer network is a big problem for some people. But I wouldn't be without one.