Help ! Confused !

Hi all,
My name is Darren and i am a newbie to this forum.
I have a bit of a dilemma. I am contemplating purchasing a omega watch, but which one.
I realise that a lot of members will say it's a personal preference type of thing and I can relate to that. I really want a speedmaster moon watch, but which one ? there seems to be such a choice.
I want something with heritage, something that looks good on the wrist and something which could be an investment for the future.
what do you recommend?

What's your budget? That will determine which end of the moon watch spectrum you can focus on.