No aftermarket dial/case is perfect, all have accuracies. YOU must research & decide which component's inaccuracies bother YOU the most.
In general, if cost is an object, Yuki is the best buy for component parts. If accuracy trumps cost, Phong is usually the best (but still not perfect & his quality varies, so be prepared to work with him). In any case, if you want the best, expect to do some additional modifications on the case yourself (or find someone to do it for you).