I use the first Aspire Atlantis. The second has an additional pinhead sized unadjustable airflow by the mouth piece. As it's my first subtank, I'm not familiar with what others are like but I do love mine. It has 4 airflow settings, a huge tank, bvc coils. Use beef20 at Mt. Baker Vapor to get legit replaces for about $3 a piece including shipping opposed to $5/piece at ur local shop. Other than that I don't suggest buying E-Liquid from there for a multitude of reasons. You can also buy nickle bvc coils if u use a temp control mod box.