Assume that you can pick any watch, in any material, but it has to be in the most recent Breguet catalogue. Personally, I'd perhaps elect for a Breguet Minute Repeater in platinum. I know little about this watch save for what I've read on their publications, and have never seen one as local showrooms do not seem to ever have them in stock (which is understandable I suppose given their lofty price tag).
I have shamelessly transposed this question from one that Curtis posted on the AHCI forum, but I thought it might be interesting anyway (I'm betting that a lot of you will elect for the Tourbillon Perpetual in platinum - wonderful watch!).
Thanks,
Andrew.