I recently bought a 15 watt Vamo V5 and an Aerotank Mega which came with 2 ohm
coils. Very satisfied with both. Ordered some 1.2 ohm
coils that were on sale. The Vamo won't fire the 1.2 ohm
coils (I thought it would) so I'm using the Mega on a mech mod right now. The 1.2 ohm coils are fantastic! Looks like I'll be trying the sub-ohm coils next. Guess that means I'll be shopping for a DNA30 device next. Where will it end? One thing that I noticed is that more airflow (a lot more air flow) makes the 1.2 ohm coils work a lot better.
Not so much using the 2 ohm coils.