I'll be totally honest here in my journey.
I tried (and I forget what kind now) one of the cheap pen type at the start and was still smoking. Eventually quit and was smoking after just a few days. It was like a $30 kit. Tasted bad, didn't help cravings ... It was just bad.
Then a friend told me about a place called Volcanoe. Started with the Inferno package. (About $70 USD for a complete kit)
This worked for me for a while. A month or so and I eventually started smoking again. My friend mentioned trying a different juice. Many of the one I tried to that point were just unpleasant.
Then I started trying different E-Juice vendors. Come to realize that my main issue was the E-juice I was using.
From that point it was all about experimenting with different blends and flavors. (Still using the Inferno Package at the time)
From there, I went all out. Provari Mod + Kayfun. A setup like this is amazing but is costly, and probably not something someone wanting to try to get into vaping will want to to do right off the bat.
The Kayfun atomizer produces a LOT more flavor from the same juice and its a different vape too. It's hard to explain really.
But where most atomoizers/tanks produce more of a a dry, hot vape.... these tend to produce a more thick, heavy,wet flovorfull vape. Really dense in comparison. It's ard to Explain.
The Provari Mod is just a Variable Voltage mod of high Quality. Sorta like comparing a Mustang to a Ferrari. If thats a good analagy.
But a set up like this will run around $300 USD. 200 for the Provari and 100 for the Kayfun VS $70-75 for something like a Volcano Inferno.
Bottom line, if you want to try it, you do not need to get into the high end mods right off the bat. Though if you like it you may want to.
But, you don't want to get the cheapest kit + cheapest Eliquid either. Find a good mid range to start. If it works for you, and it will for many many smokers, then you can look into the high end gear for more pleasant vaping experience.
But when/if you make that move, bear in mind you'll need to cut back on the nicotine a lot. A lot of the higher end setups hit a lot harder and make some serious clouds.
You can also mix your own Eliquid, Buy it from various Vendors or there a re subscription services too.
I mix my own, but also use ZampleBox.
ZB is a subscription service. They send you Premium Eliquids and coupons every month, so long as you stay subscribed. They are discounted to since you pay $25 monthly and get 6 bottles for the basic package (the one I have).
The downside, you don't know what you'll get. It's just random. But so far everything Ive had has been good save for one I didn't like.
The only thing you control ATM is if want/like tobbacco, menthol, and what Nicotine strength you want.
I love it. great way to find new flavors and vendors you wouldn't have otherwise.
I think they are worth it for those who want to experiment with different flavors/vendors.