Durant. After one Hone Claws, you will wreck havoc. Durant's bulk isn't half bad, and he has only one weakness. On the other hand, you could run even Band or Scarf, but I prefer Hone Claws. Klinklang is very frail, and has a hard time to set up against the threats in RU, such as Nidoqueen, Magmortar, and such. Also, Durant needs less setup.