Sounds like you should be looking in the re-buildable atomize section. The protank 2 is a great beginner to intermediate tank. What really produces the quality and quantity of vapor is the atomizer. A quality made atomizer that you can re-build is what makes all the difference, and makes your pvd shine. Start looking, reviewing genesis, Kayfun, rba's. I currently using the Russian rba, which is a Kayfun clone. It's fairly easy to build the coil, and you can use the standard silica wick that comes with it, do a micro coil on it, on my second build, I did a SS mesh silica hybrid coil. At least that's what I'm calling it for lack of better term. So far I've only built 2 coils in my vaping career, and they both have been outstanding. The SS mesh & silica build is working so good, I'm not going to mess with another experiment, till I mastered this build. Will take a few more months of technique, on the vape training, to become proficient at it. Figure a few more attempts and I'll be highly proficient at my current build.
The genesis is purported to be the atty of all atties, by the people who think they have mastered the art of coiling them. They are typically a SS mesh wrapped with Kanthal wire. but they are ever evolving too, some go ceramic wick, some go dual coil, some swear by silica in the middle, the debate opinions and quest goes on and on. A Genesis build is not for every one, they can be finicky until you get it. But once set up right you can use the same build for a month or two. I bought a I-atty clone from china (fast tech), should be here in another week, and will see whether they are for me or not. But mine is only $16 delivered, so figured that was a good deal to experiment with a devise that typically cost $150 or more if you bought the real McCoy.
The hardest thing to do in this Revolution of Vaping is deciding and finding what is right for you, and what you are willing to do to make that Ultimate Vape yours. I typically search a mod or atty for up to a week which involves hours and hours of searching, reading and viewing reviews and
other people's input on the given devise.... YouTube is an excellent source for reviews an how to's , once you find something you think you want. It always takes longer for me to decide on something than to buy and receive it. Research Research Research, that's my advice.