When CSI and the people running BCA events switched to Cyclop balls, pretty much everyone I know that has tables around here got them to practice/play with. They have held up pretty well, except for some obvious fading of the colors on some sets, and the broken 1 ball I shared earlier. Over the years, the 6 and 7 ball colors only got me a few times. The cyclop balls definitely skid more often than I liked. I've been using Dynaspheres lately and the cling/skid is noticeably reduced.