Originally posted by ZackJones
It seems to me that you'd only need one of these if you can't achieve the proper kneed to pedal positioning - is that correct?
To achieve a comfortable and efficient riding position, which may or may not have as much to do with "knee over pedal" as some would advocate. Rather than trying to explain, just read Peter Jon White's article on bicycle fitting relative to fore-aft position and KOP -- about 1/2 way down the page:
http://www.peterwhitecycles.com/fitting.htm
Thomson makes excellent products: we use their seatposts & stem on our off-road tandem.
Originally posted by ZackJones
Other than weight what benefits have you gotten out of your carbon seatpost?
Ti and carbon seat posts absorb certain types of road vibration and shock quite nicely compared to their Aluminum counterparts and have the benefit of being incredibly light with an infinite amount of fatigue life.