My dad is in the business (jewelry, but he's a watchmaker/dealer), and told me to start looking into some watches come graduation time. I currently have a G-Shock DW-9051 and a Timex Expedition, but the G-Shock is very old and becoming problematic, and I really don't like the Timex. I was looking at some Seikos and Citizens, but my dad recommended something with longevity and resale value, (whether I decide to sell it one day is irrelevant, it's the quality and value that he wants me to look for I guess). I have no idea what kind of price range he has in mind, but being in the business, I'm sure it's not a huge deal. He recommended Rolex, Omega, IWC, and a few others, (don't remember). I'm sure he'll be looking for a used one. I don't think I'm gonna be too picky, but I'd rather get opinions here from people with experience with each watch that's recommended. It should definitely be a diver's watch, and something with an easily swappable band. I absolutely despise metal bands, so I'd get myself a Nylon and maybe a Leather. I'm not exactly sure what else I should be looking for, so any starting information or things I should pay attention to would be great. Thanks, -?