For $15,300 you can get a brand new PT-1430 ($17k list, less the 10% off sale still in effect), so that changes the whole cost equation and comparison. Similarly, a new PT-425 on sale is $9900 ($11k list, less 10%) -- so the PT-425 costs well over 30% less than the new Avant 200 series...
I kicked the tires on the entire Avant lineup at the OPE Expo in Louisville KY a couple years ago. They're impressive looking machines, with much higher build quality, fit and finish -- but they come at a real cost difference -- about 50% more for equivalent HP and capability (lift, PTO, etc.). That's just for the base machine. Their attachments are very similar, and similarly priced -- in some cases twice as much as the equivalent PT attachment.
Their base design has some distinct disadvantages for my use on steep hillsides -- they are very short wheelbase in comparison, with a higher center of gravity. Plus, they, like skidsteers use a lot of additional thick cast iron ballast on them, to offset the stress loads of the loader up front. Power Tracs, in comparison have NO additional ballast designed in -- the weight of the machine comes from the thickness of the steel used in the body tub and other structural components, the powertrain itself, and their longer wheelbase (and overall length) moves much of that weight farther back from the fulcrum of the front wheels. Consequently, they have a much lighter "footprint" when working on lawns, soft soils, etc.
I do like the extendable boom on some Avant models, but overall, the PT offers far more bang for the buck for homeowner use. Commercial use is a different animal, and not my concern...