I'm new to vaping myself. I have an Evod 2 kit, Still use the 650mAH batteries as a backup. I'd suggest picking up an Evod Glass, sometimes called and Evod 2 4 window, if you wanna hang on to the batteries as a back up. It's pretty much a protank 3 mini without the chrome. I honestly love my protank 2, and would suggest picking up a Kanger airflow control valve, or an Aero/Geni tank replacement base for them. Under 5 bucks, helps stop leaks from the botton of the coil, and just makes the tank that much more awesome. Same can be done with the mini's, currently picked up 2 aerotank mini V2 bases off of sun-vapers for 3 bucks a piece. I like it better than the stock fixed drilled protank mini bases.
I use a nautilus mini and a Protank 2 as my main two tanks currently. Naut with a 1.8 coil I run at about 9-9.5 watts, Protank 2 with the mt32 Socc cotton coils (better flavor than the stock in my opinion and barely cost more) at about 7-7.5 watts. Analog like plume of vapor, great flavor.
I have a Kanger IPOW2 (ego style but wide, believe it's 19mm while the 650mAH ego's are 16mm?)6-15 watts, doesn't do Volts but I don't play with that much. 1600mAH battery, internal with micro USB charger. Lasts me about 2 days when I vape like I smoked (15-20 puffs every 1-2 hours. Picked it up for 18 bucks on ecig.com, Naut mini is 18 on there as well, believe the full sized Naut (5ml) is 19 bucks if you're interested in the bigger tank.
I also have an iTaste Mvp v.2, might be hard to find because it's older now, 5-11 watts I think. Does Volts as well. Pretty good battery, lasts about 3 days before the fire button LED goes yellow.
If you're looking for a bit higher watts without breaking the bank I just picked up a itaste SVD 2.0 for 20 bucks. 5-20 watts, pretty well built an reviewed to be a longer life mod. This one uses an external battery, but can be found on madvapes.com or vapingmall.com for that price.
If you go that route I got a Nitecore d4 charger for 20 bucks off of eightvape.com, picked up two Samsung 25R (Greens) from there as well.
If you go newer tanks, I think you might want to go a bit higher. Maybe look into a 50-70watt device to future proof yourself a bit. It'll cost more upfront but work with more tanks when you have a better idea in the future.
Good luck!
Edit: Oh, almost forgot! No matter what you choose, I would use vapecrawler.com to cross check prices quickly. Awesome site, I always use it against a google shopping search to find the best deal.
