hey there, im pretty new to vaping, only 2 months in and i love it, i accually bought my first ecig on a whim at 711 (grabbed an njoy) and i havent been able to put it down since. i must say i do like the rn4081 but i need an upgrade, looking for a manual battery and a 2 part system, cant decide betwen the ego or a kr808d-1. and recomendations??