3 is my favorite, everyone likes 2 but I found it too hard (and you have to pay coins to save). I used to hate the art style but it grew on me, although these games haven't aged well. I finally get the joke with Cranky Kong being an older gamer set in his ways. Tropical Freeze is fun too but very tough.
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"The most merciful thing in the world, I think, is the inability of the human mind to correlate all its contents. We live on a placid island of ignorance in the midst of black seas of infinity, and it was not meant that we should voyage far. The sciences, each straining in its own direction, have hitherto harmed us little; but some day the piecing together of dissociated knowledge will open up such terrifying vistas of reality, and of our frightful position therein, that we shall either go mad from the revelation or flee from the deadly light into the peace and safety of a new dark age"