Clocks are a difficult puzzle to make. So far, we don't have a company that is producing high quality clocks. The LingAo Clock is decent, but the pins may be a problem if you're trying to break world records with it. They start rather stiff, which is good as they won't move unexpectedly.
If you're looking to learn clock or just want to enjoy the puzzle, then this clock is right for you. However, if you are looking to compete for first place at competitions, you may be displeased with this version.