I've had my Seamaster 300 M now for about a month. I went with the Quartz movement over Auto just for practical reasons. IMO, you can't buy a better watch for $2,000. Classic look and very comfortable. It is classy enough to wear with a suit and casual enough to wear on the lake or at the beach. I just spent 9 days on Topsail Island and mine never left my wrist. Put it through all sorts of rough conditions with salt water and sand. Still looks just like the day I walked out of the store with it.
If I ever decide to drop the coin for an Auto. It'll be the Speedmaster Broad Arrow.