I'm not sure of your personal tastes or budget, but the yellow gold 5817 is incredible. It looks as good off the wrist as on; and I have trouble keeping it off and rotating it among my other watches....
There is something about Breguet, that distinctive "look" with the dial and the hands and coin side, etc.; and the history too. It very rewarding to wear a Breguet, and for me, this watch in particular.
Sorry, but the pic doesn't do justice to the watch.