Yeah, so many are out there, and you and others like yours, so really it's mainly the battery. I take issue with companies lying when batteries are involved. I've never purchased an efest battery before because of that(different and more dangerous lies by efest). I did finally buy the efest blu6 since I needed more charging, and the app is great. Aside from that, they don't get my money. I guess I kinda feel the same about HCigar. I also had an awful HCigar Black Copper Stingray clone once upon a time, though that means absolutely nothing, totally different, apples to oranges. I still have the bad taste.
With 510's it's so difficult to determine if it's the mod or user error at times. A good 510 can be fucked up quickly. I managed to compress the spring in my FDV V4 510 on my DNA Tugbox. I didn't collapse it, but I did need to work it back up a bit. I may still open it up so I can really fix it, but it's fine as is. Still, I tried a bit too hard, about two turns or so, to get an atty flush that has a long pin. I knew I was being stupid while doing it. All is fine, but I guess it shows that brass or stainless, press fit or FDV/Varitube, the only thing that matters is how you treat them.
I need to find that leaked HCigar DNA 75 ad again. I wants to look at a potential precious... Lol. I finally upgraded escribe and my firmware on both DNA's to the 2/29 one. I'm digging it. Temperature dominant is a really nice feature IMO.
@Deucesjack have you heard anything solid about the flask version? I don't doubt you, and I'm sure it's getting done unless the chip just won't fit. Just wondering if you heard anything specific?