I recently sold my Breguet 5237, disappointed with the finish of the movement, and botched screws. It may have been a fluke example--it may be bad reason to sell a watch, it may be my perception only, but it made an impression on me. I wouldn't spend the big bucks on a Breguet again, although I still admire their designs, and most importantly, their history.
I do not mean to provoke or insult anyone with this post, just to answer from my experience.