A lot of contractors, large and small, rent their heavy equipment. And it's usually fairly new and dependable equipment............ When you hire a contractor you're basically renting their equipment anyhow, so it might as well be new equipment which is backed by a service department.

Also, It might pay to be cautious when hiring someone to run equipment that you've rented, because if they maliciously or negligently break something, You'll be liable for the cost of repair.