I would go with the Kennedy over the SubZero. The subzero takes 4 airflow intakes and merges them into 2 airflow holes, allowing the air to hit the coil with more force, for a cooler vape. Whereas the Kennedy has 4 individual airflow intakes and airflow holes, spreading the airflow over the coils more evenly, for a smoother vape.
I would go with the Kennedy "22" as opposed to the "v2", it's a much nicer, cleaner version, the airflow holes don't feed directly down to the mod, but from the sides instead, much the same way as the SubZero, but instead has two very large airflow intakes, that split into 4 airflow holes, having the same effect as the v2, but without the potential leaking problems the v2 might have.........and my Kennedy 22 came with the Glass Competition Cap as well
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