I would like to share my experience with nubuk hubs (built by chosen).
I bought a complete 29er wheel set last year, just like this one :
http://www.nubuk-bikes.de/teile-parts/l ... t/a-32858/
Price is very competitive but … the rear hub is crap and nubuk company do not answer to its customers !
The freehub cannot support normal use. A deformation appears after a few hundreds of kilometres. When the deformation becomes too big, it makes contact with the axle and then the freehub becomes not “free” anymore. I precise that my weight is 68 kg and that I’m not very powerfull (climber, not sprinter).
Here is a picture of the failing freehub :

There is no doubt that after deformation there is failure just like what we can often see on tune’s freehub.
Surprisingly, nubuk sent me a new freehub the first time that this happen without any problem. However, it happens again and despite 10 e-mails and numerous phone calls, they do not answer me anymore. I have no answer to my problem. These freehubs are different from ZTR ones so I cannot find spare parts in my knowledge.
I am not sure that anybody could help me but at least I want to warn people to buy wheels with nubuk hubs, or even anything to this company, since they do not answer anymore when there is a problem.