My preference is small watcher with a crystal 29-30mm. Reason is a small wrist. They used to be common but hard to find now. I have one that is Mechanical because that was all I could find.

Quartz is my favorite because when I was a kid I couldn't get a mechanical one to last a reasonable amount of time. Neither could my dad. So when quartz watches came along they lasted for years and the battery lasted 3-5 years. But they're too big. I look handcuffed in them.