I see, the Velocity has a long 510 I think, should that be an issue?
I got the G2
Tpat591
Not real sure but it might, sometimes it just needs a little time for the 510 of the G2 to break in. My first G2 I had problems the first day or 2 but after that it was fine, not sure why to this day. I have since gotten 3 more G2 and never had the same problem.
One odd thing for me is the Tobecco Supertank mini with the tobecco coil did not work on either my G2 or Slice. Swapped the coil to the Aspire triton and it worked perfectly. I know the tobecco coil was not bad, it worked on my other mods but for some reason the Hohm mods didn't like it at all. I know it works differently than any other chip on the market, if I remember correctly from a video it "pings" the coils to measure for changes. Not even sure what that means, all I know is it works.
Before the G2 I was a power user 90% of the time, always thought TC was a bit too anemic for me. Now I use my G2 and Slice in TC 100% of the time, feels like power mode with boost but I can vape my cotton dry and not hack up a lung from a dry hit. I also don't feel it pulsing like some mods in TC, the Alien comes to mind in SS316 mode, the pulsing has me switching to power mode most of the time.
I really do like my DNA mods and plan on buying a Therion or Finder DNA167 when I can find the right price. It is more of a smooth vape for TC, no pulsing but at the same time lacks a little of the punch the G2 has. For use in power mode the DNA's are not the top choice, no preheat for power which is on so many other mods these days. A lot of people enjoy a smooth vape and the DNA's are hard to beat, you can get the same vape from the G2 but the DNA may have the edge there. The G2 is what Raymo2u (the coil builder) uses for his VW device, all his other mods are Mechs. This is why I gravitated towards the G2, I like a mech/power like vape but after reading his posts figured the G2 was what would get me into TC and he was right.