Well, there's always Roberts!Master to disdain more, but otherwise... Though I will say I felt like apologizing to Ainsley when seeing his introduction not as the Master but as Tremas in The Keeper of Traken. I had watched some of his Master episodes before and had not been impressed, but lo and behold, Tremas proved he can act well and with subtlety. (And I think it's a shame the show never used the fact the Master stole Nyssa's father's body again after the introduction. The sheer angst potential!