Just realize the limitations of the 14500 battery size when choosing a mod. These batteries are great for regular clearomizers and cartomizers. When you step it up and place a high amp - drawing RBA/RDA on them, expect poor battery time and performance when compared to an 18490 or 18650 battery. Expect to need to carry several spare batteries to last you throughout the day.
There's are good reason why there are so few 14500 regulated APV's on the market. It is the weakness and limitations of the 14500 battery.