This x 100! You also might find your watch tastes change after you really get into it.
For example my first watch was my most expensive, and currently gets the least amount of wrist time. The Rolex 1655 Orange Hand Explorer II, was the first watch that really peaked my interest, and a few years ago Rolex decided to "remake" it. I went down to look at it and hated the newer version, the proportins and dial did nothing for me. In the next case over I saw the Planet Ocean Chrono with the Orange bezel and fell in love. I love the watch, but today if I was going to spend that much money on a watch I would look at something different.
Granted the 300 SMC is pretty timeless, I'd venture a surprisingly larger number of people here then you would think own a Seiko 5 or Diver. Those Seikos are watches that pretty much every watch guy respects. If its good enough for Martin Sheen in Apocalypse Now (6105 turtle), Ed Harris in the Abyss (6139 turtle), Robert Redford in All is Lost (almost a co-star of the film SKX009 on Blue NATO), and Mick Jagger for awhile in the 80's (another 6139) its good enough for everyone!