There are a few key factors to consider when choosing the right vape for you: your smoking habits, preferences and current nicotine levels. If you're a heavy smoker, try a vape pen, pod system or mod that offers higher nicotine strengths. Conversely, if you're looking to quit smoking entirely, start with low nicotine levels and work your way up. Finally, consider what type of vaping experience you want: direct lung inhalation (DULL), mouth-to-lung inhalation (MTL), or vaporizing concentrates (vaping oil/wax). DULL vapes deliver undiluted nicotine juice through the airways into your lungs, MTL vapes allow smokers to inhale smoke from e-liquid that's been heated instead of burnt, and vaporizing concentrates use wax or oil as the heating reservoir.