If it's a Swiss Unitas Movement you should be fine. I've had my Swiss 111 for almost 2 years and no problems, knock on wood. The Asian movements seem to be ok as well. Now, the question is, what is your definition of reliable. In terms of how long should it last? There are some topics in the search about how long reps should last, but I mean if you treat it right and get it serviced, things like that, then you should be golden.