Welcome Bluenote. After 4 years of vaping, what is your current set-up? What did you start with? I imagine a lot has changed.
I first started getting one of those disposables at a gas station....absolutely hated it, it tasted horrible. That threw me off for a while, then I got a CE4 or 5...not sure, plastic tank with an ego battery (the price I paid was ridicuosly high...paid the price of ignorance), and that was better, still not there, I did not liked it leaked, you had to let it stand up or the eliquid would come out, and after a week the tank did not produced much vapor (you could not change the coil) and you had to discard the tank and get a new one. I did this one for a while but was not happy with it. Then I got a Mini Protank 2, and that one did it! Then I got an airflow valve for it....it got even better....then I got a variable voltage battery...that was fun! Now I have an Aerotank, a Subtank Nano, a Kbox a few batteries in cluding the emergency passthrough....and I still like and use the old Mini Protank .It works great with 2.5 Ohm and 8-9 Watts, I love still the flavor the mini can achieve. I change from one to the other as the moon changes

I sometimes wonder if those cig-a-likes made by big tobbaco companies from the gas station are made for that purpose: to make you go back to smoking cigarettes. These could not be worse! The taste is horrible, the vapor is poor after the third puff....bad, bad, bad.