Zero, OSMALL or Xtra? Which do you prefer?

[Vaporesso_Milo]

 

[hittman]

I haven’t tried the xtra but out of the other two, the osmall is the winner.

 

[vaper1960]

Not familiar with the other two but won a Xtra and very excited to try it. I really don't even need to look at the other two... the Xtra has a great built-in battery and still fairly small (I love how the pod fits down in the mod) An on/off button is also important to me (although you can just remove pods for safety)