Oh yeah, none of us are addicted. No sir. We just happen to have 100 atomizers and mods on the shelf
No, kidding, you're right, and even more right by calling it a hobby, because that's what it is!
There are devices which don't make a lot of sense to try to vape direct to lung, the draw is just too restricted and the coild used produce limited vapour for that. On the other hand, there are devices with big airflow, and beefy coils which produce far too much vapour to make any sense to try to get in your mouth first. Can't think of a good analogy, perhaps trying to eat a steak with a spoon, or finely chopped food with just a knife. Both will get you fed, but there's clearly a right and wrong way to do either!
In terms of devices you need to look at the decks, the coils that can fit, the size of the chamber etc. Once you get more experienced it's instinctive what type of coil goes well with what. Look below, this is the Taifun GSL deck, my favourite MTL device. It is clearly made to take round wire, and has a small airflow hole.
Now look at the Goon RDA deck, with an instagram build in it (and it can take two of these), see the difference? Each of the six airholes of the Goon is larger than the Taifun's, and the amount of wire used is about 20 times more in the Goon.
Why do people like either? Down to preference. Some juices too work better with one vs the other. Tobacco juices for instance, or NETs (naturally extracted tobacco) work best in tight draw MTL devices, bakeries and creams for me work best in beefy situations. With a MTL tank for instance I'll take a sip and exhale through the nose taking in all the little nuances, with a DL tank I will take a big gobfull of vapour down my throat, and exhale a cloud like a dragon (as my kids like to say). Both are good, but after a day of MTL in the car/outside the office I want to go back home and blow some steam, literally
