and, as everyone previously stated, it's about what's most desirable TO YOU. If you want to talk about rarity of current production, The Extreme LAB (5 pcs) is tops. However, the Extreme Tourbillon is something you seldom see in a shop, and less so on a wrist. Low numbers, however, don't necessarily make for strong desire. Look at the Rolex Daytona - there are PLENTY of them out there, but people still "think" they want it, even though I can think of a dozen or two watches I'd rather have.
So, what draws you? Which family? A Reverso? A Master Control? A Compressor?
For me, I think the Duo-Meter in rose gold just about takes the cake. "What's your opinion? We'd like to know."
-Dean