There are basically two criteria that must be met with any seatpost: will it hold the saddle in a position of your choosing securely? And, will it last? After those two are met, then things like weight and appearance can be discussed.

The Ritchey WCS Aluminum Seatpost holds, lasts, and is light. For one thing, the clamped end of the post isn't a plug, but part of the post itself. The clamp is a two bolt design made for redundancy; one bolt holds the left side, one the right. Even if one bolt fails, the other will hold. The clamping hardware digs into serrations for further security. The low-profile clamp reduces stress on the rails by being wide and curved to meet saddle rail dimensions. Being aluminum, the post should be able to bend without breaking or fracturing. And to minimize weight, the bottom of the post has been finished on an angle to take out metal where it isn't needed (the back of the post.)

The Ritchey WCS Aluminum Seatpost is made from 7075 aluminum. It comes with an aluminum clamp and stainless steel bolts. The cradle is 48mm x 38mm. The color is black. The post comes in 350 or 400mm lengths and 27.2, 30.9, and 31.6mm diameters. 235g. (27.2 x 350mm.)