When the Asian 7750 movement was reviewed, quite extensively by The Zigmeister, he found that the chronograph portion of the movement was the unreliable part, and that the regular timekeeping portion of the watch was fine and would remain reliable if the chronos were not utilized. If we assume that this is the case, the watches that use this movement without implementing the chrono functions should, in theory at least, be fine.
I will be ordering a sub in the next few weeks- have not decided which yet.
-O