I always find RTAs a little bit tricky, if the wick isn't just right then you can have too little juice flow (and possibly dry hits) or too much juice flow (and leaking issues!) - but when you get them just right, RTAs are a great balance between convenience of a tank and the flavour and experience of a dripper :)
The Pharaoh by Digiflavour and RipTrippers was a great compromise in that space - did you ever see that one?
i tried it by a friend of mine and now i'm looking to contact the company and make the send me one
http://digiflavor.com/project/pharaoh-dripper-tank/
Really good flavour and a very interesting design. I've mainly used it with a single coil (a big one!) which means the resistance is higher than usual for me - but the flavour is very good, the juice well is huge and the fact that it can be tipped makes it a great option when driving :)