Welcome to the forum! BK, Sead and Toro will all take good care of you. As far as A7750's go, there really aren't all that many other options if you want a reasonably accurate chronograph. I have had some 7750 issues, but in general, I think that they are almost as reliable as the asian non-chrono movements. For example, I currently have 21 reps with A7750's in them, and 3 of those have or have had movement issues. The ones to REALLY avoid unfortunately are the modified A7750 movements with seconds @6. They are all ticking time bombs. That's why I have never bought an IWC Portuguese 3714.

Kris