Whatever looks interesting within a 3 hour radius of the western-central PA area?
If there was a Used Pin Mart™ you could just roll up to and pick whatever you wanted then suggestions would be great, but at that price point it's more about what's for sale. Better to do a search, post the results, and let people help you decide which unloved pins sitting at $1k are worth making an offer on.
I could say "yo, I bought a Mystic a couple years ago for $900, find that" but the chances of you actually finding that are pretty remote.