Wait and see
I've never been a fan of the cases apple puts out with there new phones, they always deliver a small amount of protection for a big price. If you want a good case for your new iPhone 6 or iPhone 6 plus you need to wait for the big name players like Speck, Otterbox, Incipio and Switcheasy to come out with there's. There's also cases like the amazon basics collection and cases from a company like Anker that produce good quality cases for a very good price. There are going to be a variety of iPhone cases hitting the market in the coming weeks, so my opinion would be to just wait and see what the other companies have come up with before purchasing one of Apples cases.