I used to use the leader grips and I still think they are great. But I have switched to zippers and find them to be even easier to use. It is easier on my back to sit at a table and pin to the zipper than to lean over my machine. snapping on the grips. But that strictly has to do with my back issues. Having used both, would have to say that the grips are faster but folks with hand or back issues may find them a bit trying. The zippers take a bit longer to pin in place but very easy on the back and hands. So you have to weigh the pros and cons.