The best advise I can give, is to first see what is vape possible, and what it takes to get there, and what one is willing to do. There are just so many excellent options, but it depends on what vape path is chosen. Research everything, look for reviews, youtube is a good source, google is one's friend, or bing

Find what makes you say, hey that makes sense, I can do that, then choose quality gear.
For me, the best vape possible, and trouble free vape is the way of the rba. Re-Buildable Atomizer. A well built tanked rba system, whether powered by a mech or reg, can provide the best of the best vape. But to get there, one must put in the foot work. Time, study, search, lots of practice, practice, trial, error, error, warning Will Robison asteroids. or something like that.
Vape is like any other hobby, can be a hot-rodder, or a moped enthusiast. But one can't just go to the cape and pilot a space shuttle.
Vape is progressive, longer one vapes, more knowledge and skills are acquired, vape gets better, and so it goes.
I never thought would want to wrap coils, wick me build, or mix DIY juice, started with a crap cig-a-like, then a ego + pt. Found the ecf, learned what was vape possible, and learned how to do it right. But then am slightly obsessive compulsive type personality. Take me to the limit's kind of guy.
I drive a hybrid car, but it's lowered with coilovers, has a catback exhaust, CAI intake and a carbon fiber rear spoiler.

very fun car
Vape long and Prosper.!!!!