You're getting some great suggestions! I would agree with either a Vision Spinner or eGo Twist and the EVOD, or the MVP2 (it comes with a iClear30 clearo).
The Spinner/Twist is Variable Volt (VV) with a decent battery life, I get over 8 hours on mine, but you would really need at least 2 so you always have one ready to go while charging the other.
The MVP2, well, that's just an amazing device for the price! The battery can last up to 2 days for the average vaper, it's pretty rugged and it can be used as a "PassThru" when the battery needs charging. It's VV/VW (Variable Wattage) and offers a really smooth, consistent vape with plenty of power to fire nearly anything you put on top of it. I got one for the wife and one for me, she absolutely loves her MVP. We use the EVODs and ProTank Mini's on ours with an occasional full sized ProTank and they perform flawlessly. It's a box mod that's a tad smaller than a pack of smokes so if a larger, boxy battery is a turn off, you may need to take that into consideration.