The Aspire sub tank on the aspire cf sub was a great set up for a while, but it's a bit chunky to carry around so I picked up a smaller setup on my way home from work last night at the local Vape shop. It's a Kanger Tech Evod VV power supply with a Kanger Gini Tank Mini. It's only about 1" shorter than my setup, but much smaller in diameter and easier to carry around.