Nothing standout about the O2 for me. It gets the job done. I have a pair of O1's and they seem to have a slightly different pivot point. Even after adding plumbers tape to the threads and properly preloading, my cartridges just spin loose all the time. The binding feels sloppy on hardpack. It's a fine binding and all, but there are better choices for your standard telemark binding. A lot of it is preference. I have friends that love the O2, but I am not crazy about mine. The BD warranty is pretty good though. Cracked a heel throw and they just gave me a new free one.