I have one of the folding tables from Sam's Club with adjustable height. It shakes very badly when I try to sew on it. I ended up buying a wooden desk to sew on. Of course that's not really portable. The people I know who have the Sew Ezi really love it. It doesn't shake. Several people have said that they bought it at the end of a quilt show when the business displaying it didn't want to take it back to their shop, so they got a good price.