I'm liking the old girl myself... the older machines are a far cry from the new "plastic divas" we're getting today. I looked for quite a while locally before I finally gave up and got the new one. The older machines were either beat to death or too expensive for used.
Don't get me wrong, the 3400 is a nice tractor, it's just... new.. The satisfaction you get from walking outside and admiring your "new" old tractor that you got a good deal on and has lots of life left is .. well... I don't know how to put it in words exactly, but it's a good feeling.
Congrats and enjoy her!
Chilly