In my experience, the most pleasant vapor, when working with flower, comes from the 7.4v Bender glass herb chamber. I love mine and would encourage any Persei owner who regularly vapes dry herb to invest in that attachment. For wax, I have found the 2.4 EC carts paired with an 18650 battery results in much tastier vapor than the 5.0 EC.
I have returned my Herc and do not plan to buy another until the issues are resolved and a statement is issued which provides transparency as to how this happened, and what D9V intends to do to ensure future products are ready for market before we have an opportunity to pre-order them. The first mass production order of a brand new product should not be blindly released for retail sale. Pull 5 or 6 and test them for 2 weeks...I had two hercs literally fall apart in front of me in the course of 1 week. If that in-house testing I just referenced had been performed, it would have delayed the release, and subsequently the profits from the Herc for a few weeks, but it would have also prevented this whole ordeal for every consumer involved. Truthfully, none of us would have Hercs, VSS mods, or missing oil. Some machine shop owner in China would have a very angry G on their hands.
I'm not trying to be a hater, but my faith in D9V is severely lacking right now; and not at all because I want that reality. As evidenced by my trying two herc units, I hoped I had the one lemon. Reading the forums here, it is obvious that many of you are having issues even more severe than I had. I see all these posts about the VSS, and other mods to encourage the product to work as it was intended to work out of the box...that should not be. Whether it is a design flaw, a manufacturing problem, either or both, the product should not involve consumers until it is working as intended. The Herc should have been subject to a more public voluntary recall and announced in a huge banner on D9V and their authorized resellers. Announcing new product concepts and acronyms in between promises that the Herc will be fixed...and not a lot of clarity for how, asking users to send pictures of mods...that is too much customer involvement in the R&D/QC process. Again, not trying to be a hater but these are exactly the reasons I finally asked for a refund.
When you are dealing with Chinese manufacturing you have to assume something is going to go wrong. Do you have any idea how many attempts it takes those guys to copy a piece of carbon fiber bodywork in the motorsports industry? even when they have the original part I want them to knock off right there in front of them; plus all the measurements verified and provided by me so I know it should be a 100% accurate replica...you would think that to be a simple task, but they manage to get it upside down and backwards more often than not. The business I am referencing almost went under in one year, mostly because so much money was lost transitioning from domestic and european suppliers to chinese suppliers. This company was forced to drop product lines and rebrand others, as well as move from a massive warehouse in San Clemente, to a tiny drop-ship office in the sticks of Vegas, because paying sales tax on California customers would consume their practically non-existent profit margin. I don't want to see D9V drop off the map. I really don't. The Persei is still the king of the 7.4v world - lets figure out why that is awesome, besides The Bender.
clarification: I am referring to the 7.4v herc, not the 3.7v model. I have zero experience with the 3.7v herc although I imagine the same issues are present. Whether or not the added heat from 7.4v is required to bring them out remains to be seen.