For fresh graduates, which one is better for mold engineers or mold designers?

Mold major graduates now have two jobs, the first is a mold engineer with a salary of 4.5k, a large factory; the other is to go to the design department to do mold design, with a salary of 3k, and a small factory. How to choose these two jobs? I hope seniors can give some pointers, your opinion is very important to me!