from a tech point of view first and foremost is maintanice records, on youre prior to purchase local dealer should have them. have codes downloaded.(if its got thirhty resarts with dirty air filter expect to buy an eng) that being said SOLID good used equipment is scarce right now. the overseas market snached a lot up durining the econimac down turn, whats left needs a proffersional look over prior to purchase, paint don't make a unit run, so my recondemndation is to buy from a bobcat dealear ( not arts not sunbelt. not any rental companys. the dealers have a vested intrest in keeping the equipment squared away. THIS IS HOW IT WORKS WE BUY RENT IT PAY IT DOWN DOWN SELL IT. ITS NOT IN OUR INTREST, TO SKIP ANY STEPS . IF ITS BROKE WE FIX IT. IF ITS DUE FOR MAINTANCE WE DO DO IT, that way at the of the run we have a good piece of of equipment, that we can sell with cofindance. and give some warrenty. to the next end user.