It's the most effective one i agree, but what i mean is that it's contextual and not an amplifier.
Base has good combat speed and focused power where full zoan has greater durability / destructive power while hybrid is more like a balance between both, not an amplifier
Zoan form having greater destructive power is wrong in most cases because in realm of One Piece world skill is also essential on top of physical prowess hence why Kaku's strongest attack (and quite possibly the strongest attacks we saw from any CP9 agent) came from Kaku's hybrid form because he could incorporate skill with physical stats.
Its damn near impossible to do that with Zoan forms due to limited movement and Base form just doesn't provide enough stats although skill is there.
Zoan form being more durable than hybrid form is basically baseless unless you have any examples showing that.
Hybrid form is just heavily enhanced base form. It is everything that base form has and everything that Zoan form has. Its not a balance of both, its taking best of both.
There is a difference. Base form is better than hybrid form at nothing
Zoan form is better than hybrid form at nothing.