Which Vapers Should Buy the Joyetech eGo AIO?. Joyetech eGo AIO Highlights. The 2ml e-liquid tank has a leak resistant design and is great for when you are out and about. Adjustable airflow allows you to change the way your eGo AIO vapes and BF coils provide great flavour and vapour production while an indicator light illuminates your tank as you vape, featuring several different colour lights to match your style.