BrotherBob, you will like the 600, I got mine from the FO also. They said 3 weeks, it took like 5 day?... and me and 5 of my buddies could not find anything wrong with it, so I don’t know why the hell is was a FO unit.. considering 5 different people “looking for errors” couldn’t find any… one bit of advice, you might what to have a buddy to help you move it around more easily. Its 100lbs+ of aquard weight.