I'm happy for the good luck y'all have had with those year's trucks, but just cannot completely agree about them reaching their zenith before 2000. I bought a new 2011 F250 4WD XLT with the 6.2L gas engine. It did double duty as a farm truck and a highway truck for a few years then total farm duty after about 2017 when I bought another Super Duty Lariat with the same engine.
The 2011 has 313K miles of hard use, towing insane loads on heavy trailers. No internal work on the engine or the transmission of either truck. 235K on the other one.
I'm going to stick my neck out here and claim that the 6.2L Ford gas engine is the best gas engine they have ever built. Besides a bit of a/c work they have been almost trouble free.