Randy,
Moss's videos have persuaded several of us to track down and test drive a PT, which led to us owning one...
There's really no way to describe how much they differ from a traditional tractor when it comes to actually using them. While they're not for everyone, nor necessarily the best for some specific uses, their versatility, maneuverability and quickness make them very efficient. Based on my experience, they'll accomplish far more work than a equivalent-sized traditional machine in the same amount of time. They're targeted toward homeowners and landscapers, not farmers... This editorial review from PT's site is "dead-on" as far as I'm concerned, and not just sales hype:
http://power-trac.com/articleKA1204.htm
As anecdotal evidence, rather than trailer it back and forth, mine is stored temporarily at my best friend's house in Tennessee, while I use it in clearing a lot and getting ready to build. I told him to feel free to use it, to pay the storage bill. He was a doubter that it would work very well for him, having grown up with farm tractors and currently owning a Kioti DK-35.
However, now that he has used it, the DK-35 sits and he tells me that I'm not getting the PT back, wanting to know when I'm going to trade it for a larger diesel that would be more comfortable for him (he's 6'4" and 275 lbs). He'd planned to deal only with one brushpile, since I have a grapple bucket and he doesn't. But, so far he's cleared (grubbed with the minihoe, grapple and boxblade -- not sawed down) the undergrowth from about 2 acres, building and burning several brushpiles, cleared about 500 yds of fence row, and prepped it and sowed it down in grass... and he's still going.
Meanwhile, he only uses the Kioti to pull a trailer load of attachments down to the "back 40" so the PT can use them -- only because I don't yet have a trailer hitch for the PT. I need to pick up more QA plates, since I've used my only spare one...
If your task is landscaping, rather that pulling plows, they deserve a look....
