I used to sub ohm for many years and thought I would stay with it and was put off by the thought of a shlepp of building an RTA or RDA. Now I really enjoy it you have total control of the way you vape by the way you build the deck and the way you wick it. Another thing to point out is that I learnt that using a single coil RTA with a lower wattage goes easy on your e-liquid you buy at the shop, but if you DIY by all means use 2 coils.