I use a 14-inch hoop, much easier than anything else. Only, NEVER leave it in place for a long period. Always remove when putting it down to keep from leaving hoop marks. Open the outer ring much wider than necessary and gently put in place, then clamp tight. This way there is no shifting of layers. The large hoops are too cumbersome and extend off your knees and collapse from the weight. The smaller hoop is easy to support and handle.
Sandy Quilter