I've owned some "real" tractors in the past, comparable in size to the midsize L series Kubota. But then I had real work to do with them, and never thought much about it. To me, that WAS a "small" tractor. But I don't have a big lot or fields to deal with now, only an 1.3 acre lot and generally needing help with heavy work around the place. I've head so much glowing praise about the smaller B series Kubota, that's what seemed to make sense. I started with an older B7100. It's not a bad little tractor and it's certainly done a fair bit, but it just didn't have the loader, 3 point, or pulling capacity to do all that I wanted done. And these were not jobs where you just take smaller bites and work longer to get it done, it was simply can't get it done. So I thought "I need something bigger". Not much around here except the little B Kubotas, but I found a B2150. Later model, considerably bigger, and with a canopy (so nice in the PHX summer). I never knew or paid attention to ratings on my old tractors, they just did what I expected. But alas, though the B2150 was roughly the same "size", it fell well short in ability to do what I expected. Not the tractor's fault, but rather my expectations of what a tractor that "size" (note, not weight) should do. If I ever buy another Kubota, I can't imagine every considering a B for anything more than a big lawn mower with a light duty convenience loader, so it would have to be an L for me. More likely, if I can find one in good shape with a loader, I'll buy another old MF T-35 or the like. A much simpler and IMO much more "bullet proof" tractor, at least based on my limited experience...