I like and use both single and dual (and triple) battery mods. They are suitable for different purposes. Dual battery mods can put higher wattages on the coil, thus producing more vapor and, at the same watts, always offer more battery life. They're also harder to carry around. I take single with me when I go out and often vape my bigger mods at home. I happen to have 6 mods currently set up on my desk as I type: in the "go to work" pile is a Reo and an SX Mini, both single battery. In the "stay at home" pile is a Koopor Plus, a Siggie 150, a Smok Treebox and an RX200, which are respectively dual, dual, single and triple. It all depends on what you want. A single battery mod in the 60-75 watt range will make a lot of cloud when built correctly. But it isn't going to win a cloud competition. Welcome to the board.