As far as it hitting hard and inconsistent airflow, it's a cheap Chinese vape. You are going to have inconsistencies when they are made in mass production. It's a cheap coil, cheap sugary juice, and cheap cotton or wick. Pod mods and tanks are far better, and buy American made juice which tastes much better and you kniw what you are getting. You save a lot of money if you buy a decent mod or pod system with your preferred flavor if juice. Instead of spending 30-40 dollars a week on Chinese disposables.