I started my foray into ruler quilting. I used the Versatool for straight lines on a table runner. I used the curved ruler that came with the Westalee foot for an orange peel design on a king size quilt. The ruler snuck under the foot a few times and the foot is set as low as it can get. I assume that is a 301 problem, not a ruler problem. For me the CG rulers will be better because they are thicker than the Westalee, but I can use the Westalee if I'm observant.