Wanted: 27.2 Titanium Seat Post

There aren't many Ti posts lighter than that USE. You really have to go very high end crabon or Ti to get lighter, and then only by a few grams.

http://weightweenies.starbike.com/listings/components.php?type=seatposts&sortby=real

May as well get it.

This

I have a USE Ti that's going on a new build. I was pretty surprised that outside of the boutique brands there wasn't much that came close in weight.

If I were you I'd look on ebay esp the US side for a second hand Moots or Eriksen with layback. The older Moots design will be easier to find. But I've nowt for sale.