The 2320 is not underpowered for mowing. Mine has nosed its way through any grass I have sought to cut. My main issue with my 2320 is that it is a large tractor for mowing unless one has a very open area and pretty hard ground. When looking at my current 2320 v. my previous bigger machines it seems small, but when paired side by side with a 1026 it seems enormous. It does make depressions in the lawns that I mow unless I am really careful about changing my pattern EACH time I mow. With loaded tires (which I need for loader work), this machine and mower as configured weighs well over 2000 pounds. I try to remind myself that this is like running over the lawn multiple times with a small car. This is one reason for my looking at the 1026, similar engine power in a smaller package that mows a little better due to its smaller size.
John M