you guys should see what [MENTION=84805]occb2[/MENTION] has been cooking up in the Yuki movement for rolex, he changes several parts out of the yuki movement and it runs beautifully according to him. albeit slight differences here and there, the work he does is nothing short of fantastic.
as for asian and eta movements, its incomparable, i find eta movements are smoother and more reliable (less prone to breaking down). Asian movements are good for budget conscious builds, you just use and throw it away when it breaks.
I don't claim to be an expert on movements, but from experience, if a watch is a keeper, i would think it is worth a swap to eta movements as opposed to an asian beat.
as for asian and eta movements, its incomparable, i find eta movements are smoother and more reliable (less prone to breaking down). Asian movements are good for budget conscious builds, you just use and throw it away when it breaks.
I don't claim to be an expert on movements, but from experience, if a watch is a keeper, i would think it is worth a swap to eta movements as opposed to an asian beat.