Not for the first time! As for myself, I would have to go for the whole of Beast Wars, I know some people even refuse to acknowledge it as Transformers or it just makes them spontaneously vomit whilst for others it is the pinnacle of the franchise. More recently, I'd have to agree with the OP and go for Highbrow. I absolutely loathe that figure but loads of people here are raving about him, so I dunno. One man's treasure and all that...
I thought that way too about Action Masters, I thought nothing could be worse. Later Action Mastmasters looked good, I was glad to get the Europe versions. Animorphs is the worst of the worst in my humble opinion. Those were dark days indeed.