So many options out there for lightweight, smooth rolling XC wheels. After talking to my LBS, I decided on the Blacklabel 259 Hydras and was able to take advantage of the 20% off sale through my shop. The wheels are light (dropped 2lbs of rolling weight from stock set), the Hydra hubs buzz like crazy but engagement is incredible. I've only had them for a few weeks, so I'm unable to review durability, but the I9 hubs are easily serviceable, the CX Ray spokes are not propietary, and the whole set looks really well made. To this point, I'm very happy with the decision I made.