I have had bad experiences with the Evod tank (Not personally, but my gf brother has one and has nothing but problems), If the right amount of wick and the right coil is not used it will leak everywhere. I would maybe look into a kanger mini protank, I personally owned one and had no problems with it leaking or anything.
Another thing the airflow is not good at all, for some reason the bottom part that screws into an ego connection is too short and when its screwed down it blocks the airflow (BTW he has all airholes drilled to 5/16, and still hits like a un-drilled CE4).
Unless you like constricted airflow, I personally have my rda drilled to 7/64.
That's right; a Bottom Coil Clearo has the coil at the bottom and the coil has to plug the hole at the bottom otherwise the liquid will leak from the tank.
You have to pay attention to that coil and make sure it's plugged up. IT's not magic