First off, the "old" asia 7750 was slow beat at 21,600 vph. They had a tendency to be somewhat unreliable although not always the case. ( I had two and neither would keep reasonable time so replacement with eta 7750 was in order).
The new asia 7750 runs at 28,800 vph and was more reliable, there is a difference between the newest version and previous version. New version has the micro regulator arm (see photo and red circled area), previous verisons did not have this. As far as reliability, I don't believe there to be much difference (experts chime in). I have a watch with the previous version and it runs great!
Used the Breit as an example, some of the dealer sites will show the movement as "new 7750" and will have the regulator. It is supposed to work by the way.