Get yourself a well-looked after, pre-owned Omega Speedmaster Professional and don't look back. I own 12 watches (from very cheap&cheerful to about as expensive as the Pro) but this is still THE one for me. It's just never boring and has about the most beautiful lugs ever to grace a watch of this size and designation.
Or donate a lot of money to Omega by buying a new one!
Or donate a lot of money to Omega by buying a new one!