How is the HH.357? Worth the extra money?
In my opinion it's not. Get a house of vapor Stingray for 40% of the cost. Or an Empire mods. Or a Smartvapes dripping atty.
The only thing the HH357 has over the others I listed is if you prefer a fast, hard draw. Otherwise it produce par, maybe even sub par vapor compared to what I listed. I've had through 4 of them. 2 popped within the first 3 days, one I got sick of and one I still have, unwrapped.
Save your money. If you and a 20 something dollar atty, get an nice rda. Of course, YMMV and all the other disclaimers.