Extralite HyperStem - 100 mm/80 grams/$210.
I installed the stealth version onto an ENVE SES Aero road bar today. The equivalent ENVE stem is 50% heavier.
I also found the ENVE two bolt seatpost to be somewhat tedious to set up. The design relies on two tiny o-rings. This is my first time using ENVE components and so far I am not terribly impressed.
-Tim-