Evil Yeti got good right at the end of Darkfall but I always found his brother to be better. I rarely lost to Yeti in duels, he'll probably disagree but I'm speaking completely honestly. As for Pure, although I could kill him... and we always had really close duels - he'd seem to edge me the majority of the time. As for Yeti compared to Xz, for me its a no brainer. Xz was the stronger.