Daomei (Leanon)
You ought to mark the sarcasm. Pei-Ruz is a team challenge for a full team, spawning every 4 days and dropping some 6 stacks of q200 cats. Similar for Pei, Aen, Sirgio, and Lixie, where up to four teams are a good choice. Great loot.
Well you must not know who I am or you would know that I am dead serious. We were the first and as far as I know the only ones to take down Pei. We did it over and over for most of the last year. He doesn't pop every 4 days, he pops every hour (on Arispotle anyway) so yeah those four stacks of cats per kill add up to way more than any OP will produce in a day.