Ok, from what I understand about your requirements, you need power, battery life, control, portability, strong juice, and money is no object. Normally, I give the same spiel of ego batts, etc. However, if I had to do it all over again, I would get two of the new iTaste 3.0 vv/vw stick batteries. These provide 800 mAh, use usb passthrough connections, about an inch longer than a 650 mAh ego, etc. Variable wattage/power is why many step up to a mod/APV. This little iTaste has all the same features in an amazingly small form factor. Start with strong juice, say 24/36 mg/ml first week, then drop when you power through the cravings. The iTaste is an Innoken product, not a knockoff and you can get them inexpensively from Fasttech:
$39.54 iTaste VW V3.0 7-in-1 Variable Voltage Rechargeable 800mAh Electronic Cigarettes Set - vv-3.0 at FastTech - Worldwide Free Shipping
You can buy these as an express kit as well:
$24.80 iTaste VV Voltage Adjustable 800mAh Rechargeable Battery - two digit display / with USB charging cable at FastTech - Worldwide Free Shipping
The first kit comes with four clearomizers. Order some evods:
$18.15 EVOD Electronic Cigarettes Round Mouth Atomizer (1.5mL) 7-pack - 2.6
And some spare coils:
$4.58 EVOD Electronic Cigarettes Atomizer Heating Core (5-Pack) 5-pack - 2.4
Ok, here's the rub, for the money, a lot of people are going to recommend a Vamo. Costs less and has way longer battery life. It's an excellent entry level mod, light saber sized device. I have two. They have an 18350 form factor as an option. All good, but not as portable as the iTaste 3.0, which is a genuine Innokin product. I have three now and will never be buying an ego/spinner/twist/kgo/winder again. I have them all and love them, but they're not the same as the 3.0 mentioned. A whole level of magnitude higher. They are the bomb, and I plan on getting more.
Vaping is almost 100% subjective. You like what you like. I'm giving you my two cents after vaping since 2009 and a whole lotta investment in equipment, and seeing amazing technology changes. What worked yesterday, works even better today,. Lotsa good juices out there. I DIY, but recently ordered a dozen bottles from MBV (Mount Baker Vapor) just to check out something new. In the long run you will save money. In the short run, not so much. Eventually (24 hours +), this thing can lead to a serious hobby, that's akin to adult Christmas/BDay/St. Pat's day, etc. all rolled into one. You'll probably feel that way 5 minutes after you place your first order.
If you've already ordered your first gear, forget this post. Welcome to the Team, congrats on your decision to beat the analogs, and Vape On!