Adding to Nanuq's comments - I would spend time researching some gen watch sites until you can narrow things down to a model (or 2) that you want to pursue. Then, spend more time researching that particular model. Google is a great place to find pics, as are the gen sites. If there are watch or estate dealers near you, visit them to see if theyh have the gen model you are interested in. If so, try it on, wind it, set the time & get a feel for how the watch operates & feels on your wrist. Remember, if accuracy is important, before you click any buy buttons for reps/frankens, it is best to learn as much as you can about the gen version.
Knowledge is your best tool when choosing a rep.