Hi,
it might help us help you if you can find out at which resistance you're currently vaping/what your favorite is. Normally, attys come in something like 1.8 , 2.4 and 2.8 Ohm. Normal eGos have a voltage of 3.3-3.4. Sadly, there is no easy answer which voltage/resistance combo is the best, as it heavily depends on you personal preferences aside from some other factors as airflow.