I collect watches too Alex... Can't afford the Breitlings or Rolex's of this world, so go for the more unique affordable ones. Did you like the NOD watch link I posted?
A thread on Pistonheads several years ago lead me to a website called 'werners flying watches' which sometimes has some beauties for little money.
Watch collecting can indeed be a costly hobby.. I'm not a huge fan of Rolex (although I have a couple, presents of when I was still living and working in Italy), Breitlings are definitely too tacky nowadays (although their vintage stuff is not too bad), and I have an overall dislike for bling bling or dramatically oversize ones.
I mostly collect watches with an interesting history, i.e. Omega Speedmaster Professional (see piccie, the "Moonwatch", the one and only watch worn on the Moon and most of the EVA until the late 90s, when it was replaced by a newer Moonwatch, and the watch that helped the Apollo 13 astronauts to calculate their orbit entry timing manually!), Hanhart chronograph (the Luftwaffe issue chronograph given to a few selected pilots), Panerai Radiomir (the watch used by Italian "Navy Seals" during WW2), Hamilton GI watch (military watch issued to US Army officers for decades) etc...
I also have a small collection of pocket watches, like a beautiful Waltham 1901 which is still exquisitely accurate, it's a pleasure to wear with a waistcoat and makes for an interesting conversation piece.
Yes, I'm a geek, but one that can tell you more than just the time