I own both and they are both great.:-! You might also consider the O7 American Limited Edition which I think combines some of the best aspects of both watches. It uses a Ti case and features a very large dial which is extremely legible. With all the extras it comes with, it easily one of the nicest complete packages that is available with any watch made. If I was going to give my Dad a watch it would the American L.E.My dad is a watch nut. I thought I'd surprise him with an Ocean7. What do you guys suggest...the LM-2 or LM-6? Is one more popular than the other?