Anonymouswrote a review of Niner RDO Carbon Seatpost on May 25, 2016
Familiarity: I've used it once or twice and have initial impressions
Just another review from a pleased customer. The post does flex and almost gives a softail feel to my mtn bike. I feel less fatigued and with less back pain when compared to my Thompson post (which is also a solid product).
I have a size large 29er lynskey Ti hardtail. YMMV