I bought the Heisenberg, because it has the coolest name and was the most expensive and strongest CBD oil in Ice's excellent product line. I've vaped this stuff for four days and the bottle is still over 80% full. My order would have arrived the very next day, but it was a Bank Holiday, which isn't Ice's fault. It doesn't make me cough at all. It's much more pleasant to vape this stuff compared to nicotine-containing vape juice. What's more, I have no cravings for nicotine by changing from nicotine-containing vape juice to CBD oil. This means I've finally given up smoking. The only negative about this whole experience is when I read the word Ice, that damn rapper Vanilla Ice starts rapping in my head again. Looking forward to the day I can buy THC oil from here, or someone sends me the wrong type of bottle.