On your two acres, I would suggest the
B2320 for a number of reasons. The financing options are great if that matters, the mmm is a drive over deck, the size is as large as I would really want to mow with on 2 acres, the operators station has much more room than the
B7500 it replaces, and it has the three range hydro. You also get your choice of tires on a new tractor, and can use the Kubota QA for the loader if you ever want a larger snow bucket, or the forks. The
B7800 has a bit more loader capacity if that is really important, but it is otherwise a bit large for your everyday needs. They work OK for mowing in some circumstances, but I still see more used mmm's for the large B's than any other mmm.
You don't talk about the contour of your land, or the chores that you want to accomplish, but I think you would be well matched with the
B2320. I've found that I either need something quite a bit larger (moving huge rocks, stumps, etc.) or much more nimble at times. The only other advantage of the
B7800 is that it does take a more efficient backhoe. On the other hand, there have been many times in my woods when I had to lift my bucket all the way, and curl it back to gain every inch I could when turning around with a
chipper on the back, etc. I sure wouldn't have wanted the longer
B7800 on those occassions!
The bottom line is that any of those choices will serve you, but the
B2320 is the most ideal............. and is the easiest to refuel too! Have fun with your search!
BTW, if you are planning on a lot of finish grading, or pushing snow I would look also at the 2000 series JD's. I love my
B2620, but there have been more than a few times when I wished I had position control on the 3pt, and brakes that were more useable for steering.