The Vaporesso Cascade is a big sub-ohm tank! It can take 7ml of vape juice and a coil that can go up to 200W! Not only does it come with two GT coils, one going up to 200W but has an adapter that lets you use Vaporesso NRG (GT family) and the Smok TFV8 Baby Beast coils. 

Vaporesso Cascade (7ml Sub-Ohm Tank)

A Quick Look