The 15202 is THE Audemars Piguet to get. They actually had to revamp the 15300st to 15400st to make it not 39mm. The movement is top notch used by both Vacheron and Audemars, originating from the JLC 920. I like the 15300st blue dial and saw one for a reasonable price, but if given the chance for the 15202, the 15202 wins hands down. Making an ultra thin watch is much more difficult than a normal sized one.
Gl hf. Buy buy buy.