andreww said:True By-Tor, but I don't judge the quality of a movement by the +/- alone. That really a pretty easy adjustment to remedy. I look at the feel when winding or adjusting, amount of play, as well as how the date changes. Of course, durability is the biggest factor, and I haven't had a problem with either.
I'm not a big accuracy freak, either. +/- 50 secs is ok for me. I swap watches on a daily basis anyway.
Huge differences in accuracy probably just indicates the total lack of QC on these watches. Worst ETA I've had has been +/- 15. On the other hand... all 7750's I've owned have been super accurate. Even the infamous old 7750.