Look who I traded for Pahnrak (I didn't like his color scheme, and It just wasn't as pleasant to the eye as the other Rakshi, because brown isn't the best colour IMO):
I got Lehvak by trading Pahnrak for him with another Bionicle fan, who was missing Pahnrak from his collection. And now we are both happy! I don't have to stare all the day to Pahnrak's unpleasant brown color! And I never got a Bohrok set before. Also, this is probably the oldest set I have, due to the fact that I don't have any Toa Mata sets yet.