Nice photos of very thin timepieces! I really like that swan neck spring on that last Patek Philippe caliber. Supposedly, the reliability of the Vacheron Constantin 1003 is quite good - for an ultra thin caliber. As the owner of two Jaeger-leCoultre 849 calibers, very similar to the Vacheron Constantin 1003 (just not as well finished and some cheaper wire springs in the 849), I can say that my experience with the JLC caliber has been mostly quite favorable!