Moots Ti seatpost
I've used a Moots Ti seatpost on my Titus Racer X for over 3 years. The seatpost has held up fine. However, the seatposts' support mechanism for the saddle rails is not the best design. It places quite a bit of stress on the rails in a very small area, resulting in broken saddle rails. In fact, since getting the seatpost, I have not made it through a season without breaking a saddle rail (Flite, Bontrager, WTB saddles). Before the Moots, I rode 5 seasons with the same saddle - no rail breakage.