My introduction to this "hobby" was through the purchase of an over priced "#1 Swiss" made Daytona. Got had with that purchase, but I learned my lesson. When I had problems with that watch I began a little research that led me to places like Rep Geek. I am now a little wiser, but the problems haven't ended. I have now bought 6 reps and have problems with 4 of them. I bought from respected dealers on this forum. Problem list: Super Avenger that gains 15+ minutes/day, Yachtmaster that was DOA, Daytona mentioned above that works fine for a while then will lose about 45 minutes within 2 hours and lastly my most recent purchase was a Hub Big Bang that has a crown that won't lock (it is always in the winding mode). I only have 2 reps that work properly so far, another Yachtmaster and a Por Flat 6 that is fantastic. 2 have been returned to China, one to FL and Big Bang is sitting on my desk still wrapped up waiting to hear from Angus.
I am not buying any more reps until I get my initial purchases straightened out.