Consider the MVP v2 (small box mod)
1. Huge (2600 mah) battery
2. Variable Voltage - Voltage can be adjusted from 3.3 ~ 5.0 in 0.1 volt increments
3. Variable Wattage - Wattage can be adjusted from 6.0 ~ 11.0 in 0.5 watt increments
4. Ohms Meter - Reads the resistance of your atomizer
5. Pass through ability - charge while vaping
6. $40 shipped at many online stores
You could also ask in the New Member Forum. You will get many more answers there due to the number of Veterans and other members helping out new members.