[lhfarm]

I replaced my '64 Ford 4000 w/FEL for a NH TC40DA. The 4000 was a real work horse, but I'd never go back. The only thing I lost was running my baler. Based on advise here, I won't be doing that. Everything from the hydraulics to the way the tractor handles in the woods is such a vast improvement - and your Ford is a great old tractor.
As you already know, there is great information on all the brands here. I won't be afraid to look at used to stretch your budget a little.