Yes, they are much better than rubik's brands, but I'm saying they become slow and terrible after a while and even when new they aren't even close to up-to-par with any other speedcube on the market. You guys probably don't have a problem with zanchis because you aren't sub-25 avg once you hit that speed zanchis just can't keep up and seem almost as bad as a rubiks brand. I avg about 15-17 so that's why I use a thunderclap instead. Again I'm not saying they're bad I'm saying they're bad in comparison.