Cons: Cartos - a little harder to fill than most other things - and you have to be careful not to let them get dry so as not to burn the filler - they are disposable and often don't last very long. Ego-T - some people experience leaks and wick problems and many report muted flavors and there is some regular maintenance involved. MAP tank isn't completely portable as it isn't really pocket or purse friendly - MAP tanks require a new CE2 now and then and availability on CE2s has been hit and miss (mostly miss lately).
Pros: Cartos are very portable and good ones are generally consistent. They are disposable, so there usually isn't a whole lot of cleaning involved (some people will clean them to get a little extra life out of them, but that's a personal choice - they are disposable). - eGo-T is very easy to fill and good ones are very consistent. They produce a lot of vapor. They are very portable and generally pocket or purse friendly. A good eGo-T atty can last a couple of months or more. - MAP tank produces a lot of vapor and is miserly with the
juice. There are a couple of ways to fill them and both are easy. It holds a lot of
juice. It is easy to take apart and clean. Also, the MAP is really unique looking.
I use all three every day lately. I've had my eGo-t for a couple of months. I recently decided to try out several different kinds of cartos and found some I like quite a bit. And my MAP tank got here last week.