The google trick, as I call it, has been so useful for me that sometimes I accidentally put rwi at the end of some google search in my daily life that has nothing to do with watches. Pro tip- it won’t help your non watch searches! There’s tons of reading that needs to be done here before you’re ready for more tons of reading if you want to figure out which rep is best for you- if you’re concerned with getting something as close to gen as possible try to find a rep from factory a vs. gen comparison for the watch, there are lots of them here.
@Reaps sent you some really on point links above, and he’s too modest to say it but his generic guide is worth rereading until it’s memorized and can be a guide for the process of buying every watch you get.