I'm new to vaping as well, but started with 18mg, vaped non-stop because I didn't feel like it was doing anything, got nicotine headaches. Switched to WTA [whole tobacco alkaloid] blends from Vapelicious and I have not craved a cigarette since I started them- in fact, the opposite- I tried WTA and immediately saw cigarettes as obsolete in all forms.
Now I've got a few blends to steep and taste including Pear and an Oakwood Tobacco.
It goes without saying that you should only go for WTA if normal e-juice doesn't satisfy your cravings. I only did because I was vaping way too much liquid for my tastes, and the flavor just was not there. The Oakwood tastes like tobacco, but without the burning portion- just the flavor of the tobacco; whole, full-bodied, and mellow at the end of the draw with an expansive flavor.
I would imagine the WTA-free version of these blends packs a similar character, but I ordered 18mg with x-high WTA.
So far, this exceeds any cartridge or 'flavored' e-juice I've ever had in flavor [I had previously been using chocolate, vanilla, and coffee blends], throat-hit, and vapor production, and I look forward to seeing how these juices perform in my cartomizers.
For the time being, I actually retired my cartomizers and have been using atomizer drip only.
However I have yet to try many blends and my opinion might be a little biased, having smoked analogs for nearly ten years.
I have been smoke-free since October 13th, and cigarette craving free for two days now... and I feel much better.