I recently bought the avocado 24, now having both the avocado and the theorem I have to agree, the avocado does have huge advantages to flavor and capacity. That being said, I still keep going back to the theorem, the smaller tank has one good thing, it wicks better at a smaller capacity so I can change juice more often rather than having to tilt the avocado if I underfill it. I won't get stuck to a single flavor until it starts to become muted. being 22mm also means it works with my istick pico should I choose to bring it back to a single coil build.