Just how big is the size of a good quality hovercraft are you looking for?
I have a 30" x 14" E.P. Hovercraft.
It is a scale model of the U.S. Navy LCAC-1.
It has twin lift E.P. motors, Twin E.P. propulsion motors (540 class) & runs on 14 sub-C cells.
The company that makes it is called Kinetics Inc.