That's what I thought until I operated a JD300C with Extend-a-Hoe. It will out work any mini excavator, and is far more versatile. You can get a good used one for $25-$40K. The 1-1/4 yard loader is priceless, and so is the traveling speed.
I tired to google a JD300C to see what this excavator eater would look like and all I could find is artiulated trucks. What is a JD300C?