I like a Hiyru for Cold Bloods, other then that, I think a Cu has the most bang for the buck. A maxed Cu's Strength is I believe 612 and a Hiyru is around 700. When you take into consideration stats and resists and the fact that a Cu heals itself, I believe the Cu to be much better. They are both about the same speed; neither are good for PvP imo.