I have just starting vaping a few months ago. And when I try to look up which would be the best vaporizer, I noticed that they come in the type that takes dry herb and some that uses the oils, carts. It looks like the ones that uses dry herbs are pretty good size and are better made with options. The ones I use, are very small, and no options but on/off, they don't heat very well either. I guess that's why one 900mg cart lasts me a month. One of mine is the size of a tampon and the other the size of a ink pen. One of the USB chargers says "Ooze" on it in green letters that I picked up at a dispensary and the other is from E-Wellness. The one from the dispensary acts like it's not holding much of a charge, while the other still works. I would like to invest in another well built one that would last years. But I only use cartridges not dry herb. Am I stuck with the cheap variety or can I find a better made one? I live in a state that allows Delta 8 but not cannabis. And Delta 8 carts are the only ones that give me pain relief.