I agree with this. A BB excels at three things: driveway maintenance, trail maintenance, and ballast. By far, IMO the thing it is best at is trail maintenance. Adjusted correctly, you drive along and leave a nice smooth trail behind you and the BB also picks up most of the rocks and sticks. I can't imagine wasting money on mere ballast. At least with the BB, as you're working along and suddenly see something that needs to be smoothed out, you have an actual implement mounted instead of a hunk of concrete. That being said, I also find the front implements (like a grapple, FEL, or pallet forks) to be the most versatile, I think because they are so much easier to control precisely--without hurting your neck by looking behind you.
Yes, a heavy BB can also DIG.