Search through some of the relatively recent digital threads.
Different advantages / disadvantages for each.
You'll get a well maintained upright for 2k, [new or 2nd hand]
But you don't need to spend 2k to get a decent digital or, put another way, I'd struggle to be convinced that any of the features, the action or the sound on a 2k+ digital piano are going to make it any closer to a real acoustic than a 1k one.
One possible exception perhaps, the grandtouch and similar with real acoustic actions, but unless you want earphones, I'd probably get the rest of the instrument as a real acoustic too.
So I'd say, spend 2k on an upright, if the disadvantages don't matter - but if you go for a digital, spend 1k and put the rest towards a real grand or lessons. Check out the Gem RP800 as well as the yamaha / roland too.