Yeh the ProTank 3 works pretty good on my MVP2 but what i found is even better is the iClear 30. Its dual coil as well and came with the MVP 2. It seems like it just gives more vape and "throat hit". They both do well on my ego Twist too. This is the twist I just ordered.
1500mAh Ego Twist VV Variable Voltage Battery Saturn 7 New for 2014 | eBay Its 1500mah and say it would last 10 hours even chain vaping. I found you have to crank it to 4.8/MAX to work well with the dual coils.
Yeh I don't think I'll ever use my gallon of PG. My flavors and nic is cut with PG too. I never have to add any to my juice. I like mostly VG in mine.
I think this is going to be my next purchase --->
https://www.fasttech.com/products/1411/10005773/1568200 (along with the batteries and charger)