Looking for some suggestions on some new RDAs (but open to classic suggestions as well). Would like to get into some more advanced coil builds like the caterpillar track coil etc. Just did my first single coil clapton which was supposed to be a dual coil until I realized my IGO didn't have large enough post holes to pull it off. 
Is it important to have 4 post holes? Or more? What are the advantages/disadvantages?
Looking for something that meets some if not all of the following criteria (in order of importance): large post holes for fitting pretty much any gauge wire, aesthetically pleasing, amazing airflow, fat style top cap, and prone to minimal leaking (if even possible).

Is it important to have 4 post holes? Or more? What are the advantages/disadvantages?
Looking for something that meets some if not all of the following criteria (in order of importance): large post holes for fitting pretty much any gauge wire, aesthetically pleasing, amazing airflow, fat style top cap, and prone to minimal leaking (if even possible).