Ultimately, no one can make this decision for you.
We can offer opinions, past experiences, and some general BS stories, but no one here knows how the truck was driven.
If you really like it, ask if you can do an overnight demo. That way you can put some miles on it like you would normally drive, to get a feel for the truck, listening for odd noises, the way it accelerates, stops and so on.
If it checks out, and you feel comfortable with it, buy it, you will have a full warranty if something does fail.
Good luck, and let us know what you decide.