The PT30 will kick the BX's behind for most of the tasks being mentioned. It will be easier to change tools. Someone mentioned a 2mph difference; you easily make that up in ease of use and work done vs time.
I have used ASV RC30's; the PT30 seems to be a modified RC30.
That RC30 works great in wet conditions. I have used them when my "B" series tractor would get stuck. You do, have to be careful turning, but the same applies to a 4wd wheel tractor.
What you will find, is that the downfall for a home/landowner, is the price of the ASV machine and it's attachments. The machine is a lot more expensive. And... so are implements. That is the downfall of all the skid steer and compact loader machines. They are AMAZING utility tractors. But, the tractor, and the implements, are just plain expensive compared to a CUT and three-point implements.
The RC30 easily outmanuevered my "B" series tractor...
The RC/PT30 is right in a perfect range; 3000lbs, 30HP. Perfect CUT size. But, $$$$$
That, is the reason I had a "B" series, and am now looking at an "L" series.
If you have not operated a RC/PT30, go rent one. They really are an amazing machine for thier size. The all hydro joystick driven design is sweet; one for the front implement, and one to drive. They ride like the proverbial Caddilac(they actually have a torsion bar suspension...).
They just cost more than a "B" series compact...