All of these suggestions are great.
Like others, I started with Vivi Novas and a Splitfire. The novas have been kicked to the curb: Leak from the top, leak from the bottom, can't lay them down it seems, very juice dependent. Most if not all my juices will not WICK correctly. I just couldn't figure it out. I got frustrated. I replaced the attys multiple times and would get random results. I also started off with a fixed voltage device, moved to a twist, finally to an evic.
I went looking for a low cost solution, and I wanted something consistent, reliable, long lasting, could handle heavy vaping (which NO wicked device can that I"ve found, sans maybe bottom coil), and generally be a good companion and not leak.
I think it was Baditude (Thank you for your service to this forum, your advice has helped me greatly) that pointed me to momandpopvaporshop.com and to their Submarine tanks. They can be found at
Tanks - Mom and Pop Vapor Shop
I now have 3 of these and they all work flawless. I can vape all day on them without issue. Filling is so simple, it's stupid. The side fill hole is brilliant. Wasn't sure I'd like it, but after using them for a month or two, I love them. I put a little o-ring on the screw, but that's my preference.
They take standard 34mm carts for the mini-sub (about 4ml) and the 45mm ones for the bigger one. The difference, according to their page, is 1ml. I have the minis. They generally last me all day, and if they don't, fine, I just unscrew, fill, and go. They are also easy to get the fluid back out if you need by using a needle of filler to pull it out.
If you go pre-punched, the only real concern you have is priming the carto. There are many many ways to do this, and I've tried them all, but the best way *I* have found is to just assemble the tank with the carto, fill the tank and leave the fill screw off, but on drip tip, Take 2-3 draws. You'll hear it, and you'll taste it. Take the drip tip off and see if you can see the top being wet. TOO MUCH AND YOU'LL FLOOD IT. That's the hardest things to avoid. If you do, just gently blow the cart out onto a napkin or whatever, put together, and go.
I'm a fan of carto tanks. I've tried clearos and others and couldn't get a consistent, leak-free, experience. I am so glad I switched. I almost gave the ecig up. Glad I didn't.
Also, as others have said, there are polypro, glass, and pyrex out there for the cin/citrus flavors. I recommend IBTanked. They are worth the investment. ( still like the side fill type better though, you could check out
Premium Triple V PolyPro 3ml Tank. I don't have one, but they look really good...cheap, metal caps, won't crack, and side fill...hrmmm....
If I spend more money on this hobby, I sense a divorce in my future...