My father is ready to purchase a new piece. He wants a thin watch to wear around and is very particular about that. He first looked at the Cartier Ronde Louis, but I finally convinced him that the diamonds on the piece made the watch look to feminine. The only other watch I could suggest to him was the Piaget Altiplano ( White gold ultra-thin mechanical watch - Piaget Luxury Watch G0A33112 ). We're going this weekend to look at a few shops, but after seeing the pictures, he was in love! To my watch gurus out there, do you have any other recommendations? Budget is not to exceed $20k, and they must be thin! Thanks in advance!