Thanks for that Judyzzr! But if that's the case, why doesn't everybody go with cartomizers? Is it because of the replacement frequency or something?
Why doesn't everyone load their fries with Ketchup or eat only one flavor of ice cream?
They all offer a different vaping experience to be honest, and they all have various pros and cons.
The draw varies widely from device to device. Some are better for loose fast short puffs, others require long slow drags with a long burn.
The flavor is different as well, and what works best for one particular liquid/flavor might be lacking for another.
They each offer various pros and cons such as ease of use, liquid capacity, operating cost (how long it lasts), speed of juice consumption, and battery life.
As an example, With a good strong battery, Dual Coil cartos are akin to running two regular cartos at once in terms of vapor production. Flavor and throat hit is excellent with these for most flavors. They last pretty well for the money. The draw-backs are that you need a really good battery/switch rated to handle currents up to 3amps to make them perform as they should, they use twice as much juice per burn, require fairly frequent juice topping, and drain the battery twice as fast. Best with bigger battery mods. Definitely worth a try, and if you go with these start buying juice in bulk amounts
The CE2 or Fluxomizer might be worth a try. They do not use poly-filler and the metal ones do last a long time. If you like the way they vape, they are a great value. I personally avoid the clear ones tho'...they can fall apart and don't like acidic flavors at all, but the metal ones are pretty hard to kill. One advantage to the clear ones is that they can be taken apart really easily for cleaning/changing flavors/modding. Personally...go for the metal, use the same flavor, and toss it when it dies! These have a very loose/easy draw and are better for 'short quick' draws. Battery life is great with these, and juice consumption is moderate. Including the liquid, you can operate these for pennies a day! Drawbacks: Some people who like 'long slow' draws report that a CE2 gets too hot for them and scorches the flavor. They do require a syringe or needle tip bottle to fill as they are shipped...or you can mod them up for drip fills.
Giantomizers and GV Vision are really large versions of the CE2. They hold around 3.7ml of liquid for all day vaping on a single carto. They vape much like the regular CE2. Long lasting....figure around 70 cents a day or less to operate these (including juice).
G4/G5/Vortex Cartomizers
These are probably the easiest thing on the market to fill and use. No filler or solder, just a short wick inside the coil, and a couple of clear plastic tubes. To me flavor ranges from excellent to not so good depending highly on the liquid. These have a stiff draw and on stock batteries do require a pretty long drag/burn for peak performance. Throat Hit to me is weaker on these than with the other systems (not always a bad thing...just depends on the flavor and mood). They can leak a little when first filling them (pushing in the stopper pushes a drop or two of juice out of the bottom) but tend to do alright after the initial fill. Not very pocket friendly...as the stopper can come out fairly easily. Do not use high acid liquids in these (Really strong Cinnamon or Green Apple flavors) as it can eat the clear plastic and turn it cloudy and brittle.
Tanks: eGo T and Turbine
Both systems are really easy to fill and use. Flavor should be good for most liquids. They are moderate on liquid consumption. eGo T has a very tight draw that takes a little practice to get it just right (at least for me). Turbine has a really loose and easy draw. My experience with both systems is that sometimes they last for months problem free, and sometimes they only last a few days and can require fiddling.
510 T
Similar concept to the larger tank systems but they are the same size as regular 510 atties and the tanks are similar in size to regular 510 carts. No filler in the carts...a wicked spike punches up through them like with the eGo T. I have not tried one of these....obvious advantages would be using them with 'mini batteries'.
PumpCarts and Dripping
You can drip right into the atties, or use something like a vapemate (Master T), pump bottle (NotCigs), or the new pump carts (GotVapes).
Regular Mega 510 or 801 atties with their native carts (801 stuff would require an adapter with eGo batteries).
These work like carts in a regular atomizer, just BIGGER. To me these are a good bang for the buck. The carts actually work well in the larger atomizers and to me can rival some of the best single coil cartomizers out there.
Regular single coil poly-fill cartomizers
They aren't very difficult to use, but can require a little 'time' depending on the method chosen to fill them. There are too many out there to list them all, and most all of them are pretty good. Sizes range from close to 1ml on up to 3.5ml giants. Prices vary as well. They usually have a medium to loose draw for the 510 ones and throat hit is usually very good. They tend to require a fairly long draw and burn to get them up to potential depending on the resistance and liquid mix (PG/VG). Unless they have dual or triple vertical coils...juice consumption is usually very efficient...the horizontal coil type (Boge as an example) just might produce the most noticeable (throat hit) vapor per drop of liquid of any system out there. Drawbacks are...difficult to 'clean', and life can vary from excellent to only a day or so till flavor and vapor starts to drop off. All in all these are usually a decent value, and are highly efficient with both liquid consumption and battery life.