What is the best castlevania game ever

It is all a matter of opinion, there is no "wrong" answer to the question unless backed by the wrong facts.

To choose the best Castlevania for you may depend on your favorite gamestyle, for example, some people perfer the non-linear and RPG style of Symphony of the Night over the linear Super Castlevania IV.


This is something you will have to decide for yourself.
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I would have to say Symphony of the Night, it seems to be my favorite one, although it can be quite challenging most of the time.
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Aria of Sorrow, Dawn of Sorrow, Portrait of Ruin, and Harmony of Dissonance are also commonly liked.