Do you require "user replaceable batteries". If not, then the MVP 2.0 and iTaste vv3 are great choices. Both offer direct USB charging, and USB passthrough while charging so you can vape and charge simultaneously.
The MVP 2 also has the ability to use it's internal battery to charge your cell phone or other electronic device in a pinch.
The main differences between the two are size, form factor, battery life.
The MVP 2 is a box style APV with a 2600 mAh battery that lasts most people at least 2 full days of fairly heavy vaping.
The iTaste vv3 is a pen style APV with an 800 mAh battery that will last 6-8 hours for most people.