I love a great logo. Highly stylised. Idiosyncratic. Iconic.
To me a great logo is simple but effective. It stands out in your mind, and acts as a personification of a brand, an anthropomorphic expression of an entity which was once just a glint in the eye of a remarkable individual.
Take these examples of what I think are good logos:
Simple. Recognisable. Clean. But my background is in Programming, not Graphic Design, so for PJs.Cat, I have developed a logo based on three characters in the Unicode, character set.
So here is the First Version of the PJs.Cat logo, in full:
Kinda cute, doncha think?