The Lancaster Quilt Show has lots and lots of vendors. The indoor tennis courts shows the winner quilts in the center of the room and is surrounded by vendors. In addition, there are vendors across the road at a local motel with vendors on two floors. You will run out of money before you run out of vendors. -- The main hotel also has a large show, but no vendors. Classes are held in the main building.
I haven't been to an Ohio show, and can speak about the Lancaster show only.
I always come home with a pokeful and lots of great ideas.
Suz