Those saw look like they haven't been used, no worn paint on the bars and no wood chip saw dust! 80' tree must be had to cut with such short bars.
I try to take pretty good care of my tools. They normally get cleaned after use.
That being said, the 20v has only been used a few times. The last bad storm we had, I used it to help neighbors cut up a bunch of fallen limbs along with a bunch of our own. I've used it on 4"x4" posts. It's a great little saw for that kind of stuff.
The 60v was new in the picture posted above. I just bought it this morning since the larger part of this tree was too large for the 20v saw (only has a 12" bar and less power).
This is the bar on the 60v after cutting all of the larger stuff up: