I bought the Quilters Slide Lock at the show in Puyallup WA in November. They have a web site
www.quiltersslidelock.com. I like it but have only used it a couple times so far. Hope to start on a large quilt some time in January and will know then if it was worth the money. It does stay in place as I have a problem with the rulers slipping while cutting strips. I've tried everything on the market to get the problem fixed and so far this works the best.