may i recommend you look at other equipment besides skids and track loaders and take that into account. It will be much easier going to the same dealer for skids as well as excavators, loaders, etc. Not having to run around to multiple dealers is nice. Deere has a nice product, and since they offered you a loaner when necessary i would go with them, especially considering you are only buying 1 of each. If it were to break down on site, instead of having to give your customer a free extra day after it is fixed, you can give them another machine within an hour or 2.
just my .02