I still use my Mega cylindrical Atomizers, I have a couple now that are pretty well-behaved. I always use them without cartridges, just drip 6 drops, and vape. When it starts drying out, and the bad taste tells you, start dripping a drop or two a bit to the side of center so as to wet the bridge and get some in the cup, then drip the remaining drops right on the bridge. The stuff distributes and a little pool becomes available.
I also use a couple of Mega cylindrical Cartomizers. These often start out with an acrid taste. I can't fathom the thinking. These manufacturers just don't have much concern for their customers. They seem to use whatever materials they have on hand. If you have a really nasty one, better to toss it. The good ones come around during the first cycle. If you have a scale, use it. Mine weigh 4.0 g empty. Filled with about 2.5 ml of VG based liquid they are close to 7.0 g. BTW, VG weighs 1.25 g/ml, PG weights about 1.0 g/ml, like water. When mine gets down to around 5.5 g, and the taste starts to worsen, I add about a ml of VG based juice while rotating and reinserting, with a syringe and a sharp 18G needle to help pierce the batting. Then it has to be shaken, to sit on its side for a while, have the excess mopped up at the battery connector. I start
vaping soon, to heat and distribute the contents. Put the caps on to carry. They stop leaking as soon as some of the juice is used up. Two of them give me a hands-off no-dripping all-workday vape. Excellent for driving etc.
I should emphasize that these cartomizers, as usual, vary a great deal. The fact that every other one stubbornly reverts to taste like a toxic fire in a garbage can is not encouraging. The factory does not use consistent materials. I found two that I have been able to use for weeks, out of 5. Needless to say, this is not an acceptable ratio, and as "unwrap and use" items, they cannot be recommended.
The atomizers are better. If you wash them and periodically dry-burn them, they make a pretty good wide-barreled drip device, and look elegant on an eGo battery. The gurgling is hard to avoid. An empty cartridge makes a good tip, especially if you cut the inside portion short so the edges can never touch the bridge; otherwise you have to visually align things each time you put it back on. With cartridges, leaking was hard to control no matter what filler I tried; I very quickly gave up.