Glad to see at least another thread with HH357 as the topic; at least part of it.
Since I got into HH357's ( I like the 901's and the shortie 510's at 1.5 Ohm myself), my whole view of vaping has changed. I mostly dripped for the 2+ years I've been vaping, and I vape like a fiend; chain vape everyday and night; I mostly work at home, and use bottom feeders for on the road (b/f's are basically dripping without the external bottle; they get the juice on the coil).
Before I tried HH357's (I waited quite a while before venturing the $22) I had virtually every atomizer you can name, settling on mostly dse 901's, iken i06, cisco lr's, so called "dripping atomizers" ( bridgeless), "hybrids", and 510's; even the Better Life's (Value Vapor was one of my favorite vendors along with Vapor Kings' bulk paks).
With 4 or 5 different PV's going daily, I would go through about 3-4 atomizers a month before they would just die.
At the price it isn't much more than my smoking habit was.
Fact is, after a few days of getting great vapor production out of all these atomizers, I would get "numb mouth", and this is with what has better flavor than a carto (atomizers); the flavor was just not getting through.
My buddy MWA was touting the HH357 and he never steers me wrong. After getting one or two I sold off $400 worth of gear (at least a hundred new atomizers - i stock up), all my rebuildables, and a few high end pv's. I came to the conclusion that innovation in atomizers is where it's at; APV"s as power supplying devices are maxed out today, but where it is needed is in the atomizing FLAVOR department.
If you look at the coil in the HH357 there is a lot of wire wraps; a buddy Fernand tipped me off that this design produces a solid line of juice being vaporized versus the 3 or 4 wraps of the genesis types.
Designed this way, I like a couple of the "hybrid" mass produced atomizers out now too; Aero ($12) from Avid (Cisco's), and now there is the shifu spec Hybrid from Vapage ($9). These are the closest to the HH357 in flavor and actually I've found that the vape is more consistent; easier to produce big clouds all the time, yet again "close" but not as good as Hanna's hand made 357's.
I have had the rebuildables; ody, iatty, genesis versions too. Tanks stayed on the sidelines though as carto's just don't cut it imo, flavorwise. With a little more tinkering I might have been able to improve on what some say are the best tasting, but tinkering is not my thing anymore.
The price is steep at $22, but if you want the best you got to pay to play.
I KNOW this; a 1.5 Ohm HH357 on a good eGo batt = less than $50 and = the best vape possible (no need for fancy high end VV). If you take care of it the 357 can last and last.