I have the Pennsy one. Great sounds, smoke and operation. I have never had a problem with it. It's # is 6-18091.
I paid $400 for mine at York about 8-9 years ago (Yellow Hall was still in service), but I have forgotten from whom somewhere in the Yellow Hall.
I have always been happy with the purchase. It blows smoke rings at slowspeeds that are a real crowd-pleaser.
Peter