You might think that 150 quid is a hell of a lot to spend on a seatpost... and you'd be absolutely right, of course. But if you're after ultra low weight coupled with strength and reliability, you won't find anything better than Easton's EC90.
Apart from the steel bolts, everything here is carbon fibre, and that includes the clamp plates. This is an in-line post (if you want layback, check out other models in the Easton range) made as a long-fibre composite monocoque with no bonding anywhere - there are no joints to fail.
It's thickened up top to provide extra strength where it's needed around the clamping area. The clamp itself is infinitely adjustable, the matt finish is superb and, er, that's about all you need to know. The simplicity is part and parcel of its strength.
It's available in 27.2mm, 30.9mm and 31.6mm diameters and our 300mm model hit the scales at 160g which, technically speaking, is bloody light, so this is one for well heeled XC weight freaks only.
If we marked on quality without taking price into consideration, this post would score a perfect 10.