For those who are new to rebuild ables you should go into it knowing that this is an advanced system. I am new to vaping (Feb 2012). I bought a fortunes worth of upgrades. It built into a hobby. Just like any hobby it requires time and learning. I have several different rebuildable at ties. By far the easiest are the line type ....make the wick wrap the coil (seems like no precision needed) fill and vape. Then comes the beauty and the need for tinkering (at least in my mad lab). I have a Katana, Orion, Defcon,and several DIDs. When my mail arrives this week I will have 6 DIDs. Of all my rebuildables the DID is hands down my favorite. It is also the most challenging to learn to setup ....but being a hobby I wanted the challenge. I don't sweat the hot spots or shorts ...I just keep plugging on to fix them. Each time I learn a bit more. I have made wick after wick and each time I get better at it. I have a lifetime supply of mesh and kanthal so I don't worry about waste. I have my 2 DIDs that have been running with the same wick and coil for over a month now, I vape on those as I build the new ones. This way I can take my time and enjoy the process. The flavor and amount of vapor from the DID is amazing, I can vape and vape and the wick never seems to dry out, I think my lips will burn before the wick dries out. (I just ordered some glass drip tips to eliminate the hot lips). If you are looking to spend $100 on something that works in 2 minutes then rebuildables may not be the best choice. Thankfully we all belong to a group of like-minded vapers who love nothing more than to help another overcome a challenge. I can't even begin to thank everyone on these forums for their sharing of wisdom. I don't post much but I read. When I have a problem with a rebuildable I know that the problem is mine and not the device (leaks and other issues may be device related - but flavor and vapor are 100% user related). I have had missing parts but Jim is a wonderful humble man who is here for us and makes it right .....how many other mod makers are as accessible to their customers .....I can only think of 1 other. So if you bought a DID enjoy the challenge of getting the perfect setup and don't sweat the user errors ....learn from them ....ask for help ....when you get it right put a feather in your cap and be there to help the next person who may have a similar problem. I appreciate Jim and the solid build of the DID ....it will likely outlive me. And I use the DID on my 3 provaries without issue ....although I have had my fair share of E1 and E2 errors ...all just another part of the challenge and learning curve. Once you do it right it works for a long time. Next I will learn how to clean my coils as a month of banana nut bread seems to be finally gunking up my coils (the flavor is still awesome though). Enjoy your DID and appreciate this community. We are all vapers looking to create perfection.