Quick summary of the eGo line: The original eGo used a cartridge inside the cone. I never used one of those.
The eGo-T (eGo Tank system) came out consisting of a battery, and atomizer/cone and a tank/mouthpiece. You'd fill the tank, and it'd wick onto the atomizer, and the vapor would come out the mouthpiece along the side of the tank. (That cools the vapor a little.) The "Type A" tanks hold about 1.2ml of e/juice.
The "eGo-B" or eGo-T, type B, came out with a cylindrical atomizer and a larger tank/mouthpiece that held about 2ml of e/juice.
I used a type B for seven or eight months and loved it. I'd fill the tank in the morning and be good until dinnertime.
You can get them with either 650mAh or larger 1000mAh batteries. For me, the smaller batteries are more convenient when I'm out of the house, and the bigger ones are good for about 24 hrs straight when I'm telecommuting from home.
I developed an allergic reaction to the pure PG base unflavored mix I was using, so had to go to a PG/VG mix.
After six months on one atomizer using unflavored PG, my atomizer died after a month of PG/VG mix.
So I bought an eGo-C. The "C" version differs only in the atomizer. Instead of a single unit atty, it consists of a cone with a screw-on base, holding a modular heating unit. So instead of replacing the whole atomizer, you only need to replace the heating module.
The eGo-C originally came out with "A" size tanks, but there is now a "B" tank version. The cones are different between the "A" and "B" for the larger tank, and supposedly the atty modules are different in how they wick from the larger tanks.
The "C" is supposed to have an improved battery, but I use both my "T" and "C" batteries without an issue.
I'm going to have to order the "B" upgrade for the eGo-C, because a single "A" tank doesn't last me through a long day at the office. (I carry a spare tank, but I like not having to change tanks during the day.)
My only issue with either the "A" or "B" tanks is that if you drop them, the mouthpiece insert pops out and seems to hyperspace jump into another dimension.
