What time is it? Watches and horology

So looking for some ideas... I have decided for a big birthday in a few years to start saving for a once in lifetime watch, and was looking for some inspiration, my criteria are;

• Not a dress watch ( I have an old Omega for that)
  
• Something to be worn everyday
  
• Around 40mm
  
• Steel bracelet
  
• Waterproof
  
• Clean dial, so not a chrono or diver
  
• Not fussed about date, and hate date bubbles
  
• Not scared of a bit of colour, but nothing too crazy
  
• Budget somewhere around £5 to 6k
  
  

Currently leading the race is a Rolex Milgauss with blue dial and the green glass, this has the added bonus of a vague family connection as my grandad used to design power stations so the anti-magnetic plays to that.

But I am open to being wowed by your ideas...