A few quilt shows ago, I bought the Supreme Slider to make quilting easier. Honestly, I didn't notice any difference, in fact, when I had a thread jam, I had to cut a hole in the slider to get things out. I was plagued by dragging fabric. The bulk of the quilt on my lap was what needed sliding, not the fabric under the needle. I couldn't understand what was dragging on my quilt until I realized it was the edge of the table. It's sharp, veneerd, and the bulk of the quilt was dragging-pulling the rolled up edge. So I angled the Super Slider over the table edge and suddenly my quilt slides like a dream.
Maybe Super Slider needs to make table edge glides instead of sewing area glides.