I have been vaping on and off for several years.
Started out with a gas station/mall set up. Liked it, but went back to smokes.
Got the Ego-c, liked it but had many issues with flooding in the mouth piece. Went back to smoking.
Got knock off cartomizers in a cheap plastic tank and liked it when it worked. User error was half the problem. Never primed it as much as needed. Went back to smoking.
Got a protank, and liked it. But had issues. Got an ego twist, and it helped. But the flavor was muted and the draw way to light. Got a protank 2, a tad better, but still was not as good as the cheap Cartomizers, when I could get them to work, again do to priming and cheapness issues. Stayed off the smokes and delt with it.
Got an iClear 30, vapor was warm, draw good, but the flavor wasn't as good as the Carts.
Bought a MVP, and that was a plus.
Just got the AGR+, self punched Boge's and I have finally gotten to a place that seems right. Good taste, good vapor, good draw and a warm vape....plus the ability to crank up the watts.
My advice, go with Carts, but do your homework. Understand that quality is important and even more important is knowing how to prime and vape Carts.