I have the B2920 and have been enjoying using it. It was right at the limit of what I could afford. I've also found that sometimes, it's good to not be so, well, big. My B2920 fits into my garage with the ropes up, and I've recently opened up a vary narrow overground road back to a very small gravel pit. Having a small tractor that I can get into some tight places, yet has the HP that I need to get the jobs done has proven to be a very good fit, for me.
I would second this, my 2620 is very maneuverable and I have been able to get a lot of power into some tight places. Definitely recommend loading the tires however. The loader is powerful enough to lift the back tires with just a blade or something on the 3-point. Plus it just gives you a more solid feel when moving rocks, gravel or heavy snow around. For most residential property owners I think it's plenty of tractor.