I believe you can run a round bailer with a low power tractors, so long as it's flat terrain. The issue arises when it's hilly. My M9 never sounds like it's laboring, in fact I don't even run it at 540 when bailing, more like 400 pto. Netting don't depend on pto speed with the BV. It senses the total wraps electronically and the density is also controlled electronically. I do like the fact that I can start a bale with a soft center and then crank up the density as the bale grows and unlike my old New Holland, it's easy to get an even fill. The readout screen has a superimposed steering wheel on the screen and you steer the tractor following the steering wheel on the screen. Finally, unlike the miserable net insertion the new holland had, net insertion is quick and easy plus the BV carries a spare roll of net above the net wrapper so when you run out of net, you just tell the bailer to insert the next roll and it does automatically, no touch on my part. Carries 3 extra net rolls on the side (left side) and 8 balls of twine on the right side that I've never used anyway. I may at some point just to see how well it twines a bale. Unlike the NH that had parallel twine arms, the BV has overlapping twine arms so I'm kind of curious how it wraps. May try it out sometime, just for kicks and grins.
Speaking of net, it really went up in price this year.