I purchased a 83K mile 2000 F550 4x4 PSD with a 9' plow and an 11' dump back when Diesel was $5.00 a gallon and they were desperate to unload diesels...
Best decision I have made in a long time...I paid $15,000 and it came with all new brakes and rotors, new windshield, carrier bearings, U-joints, and it had a 2 yard sander too...
What it has taught me is that spending the coin for a truck that will do the job without issue is always a good idea. This 550 carries 2 cords easily, and legally. A tonner in NH can't carry 1 cord of green hardwood legally.
I would advise anyone who's looking to buy a ton dump to look into a 450 or better yet, 550 sized truck...