I am thinking about a retirement business and am trying to find the best mini excavator to use. Will use it for water, sewer and underground electric ditching. Maybe some building footings or landscaping. I want it small enough to haul easily with my 3/4 ton chevy. I really would like to have a good used machine. I think the 3 to 5 ton size may be best. Any suggestions on size, make and modle?