If I was a newbie and had to start over I would go with a pair of 1000 mah ego twists and a pair of the Vision Vivi Nova 2.5's.
Easy and convenient to use, good vape, and easy to maintain with no fiddling. When you done with one tank just take it apart, rinse the componets in warm water, and set them aside for the next day and fill your other tank.
Instead I tried one of the hyped ecig kits that failed: bad charger, bad atomizers, and batteries, the ego c
tanks: which gave me good taste, but leaked, Apollo
tanks; which gave me great taste but leaked and had wicking issues when the got below half full, CE 2 Cleros which did not give me much taste, I had to fiddle with, and did not last long, then moved on to Vivi Nova tanks, carto tanks, and VV & PV devices. Whew!
I threw out most of the stuff I bought in the first 6 months this morning. Some used some not. If I could have skipped the first four steps it would have been great, but i learned a lot.
Fortunately I found this forum and it got me on the right track.