I wouldn't want a watch much thinner than a Vacheron Historique 1955 anyways. To me, that's the nicest "Ultra Thin" or "Extra Plate" watch out there along with some Piaget Altiplanos. The Jaeger-LeCoultre 849 is amazing, especially for the price. A true value and underappreciated gem. It's a great place to start, because they're not too expensive and see if you like ultra thin watches and it's much less expensive than a Vacheron Constantin 1955 and the Piaget Altiplano. Great piece.