If you're using a standard size cartomizer, then you would probably want the "cone". It's a little longer than the "steel sleeve" and covers almost the entire cartomizer (leaves about a 1/4" sticking out of the top of the cone). If you're using something the same diameter or larger diameter than the batter (such as a tank), then you would want to use the steel sleeve to close the gap and cover the threads.
I found a "shorty cone" that had a pic of what it looks like with the cartomizers I got, and it looked perfect, so I got it, but I'll probably get the bigger cones like you're talking about eventually. I gotta quit spending money for a little while lol.
about the juices (black cherry, fireball, citrus, coffee, some weird coffee rum thing that I got free):
I'm filling up several cartridges so I can try them out the next day or two so I can figure out which I'm going to take with me on my trip. Now, it's almost like everything smells the same, and I feel like I may be smelling the vg and/or pg at this time? I dunno, it's kind of like a different smell than the flavors I'm using, yet is present in all the juices. In any case, it is driving me nuts, and I need to just put it all away for a little while, because I'm a little overwhelmed. Even though I've smoked for so many years, I have ...overactive "smell buds" or whatever. I also have olfactory hallucinations off and on, so, wheeee. (IT'S PROBLY A TOOMAH!)
I honestly do think I'm feeling the nic from all the juices. I pushed some fireball too fast in the condom and got kind of "splashed," and I'm basically just still awkward with using all this juice. When I first started looking at vape stuff, I thought it would be a while before I used juices that I chose, and would use pre-filled carts or whatever mostly at first, but that went out the window when I got the ego-t. I also said it would be a while before I made my own juices, but that's probably true! Anyway, I've read that most people don't feel anything, but I should probably wear gloves. And a mask.
Thanks!