Ms. TxTunes higher ohms are for people who want more flavor, less th and vapor production potential, with maximum battery life. Before the invention of dual coils (believe it or not they're still fairly new, only becoming popular about a year ago) you had two option, maximum throat hit and vapor production at the cost of certain aspects of a juice (lower ohms, and with really low ohm single coils complete flavor mute(1.7ohm sc)), or maximum flavor (higher ohms). Dual coild combine both worlds at the cost of battery life due to the extra amps they pull. It's more of what you prefer than what type of vaper you are. I go beyond chain vaping (go through 15-30ml's a day, honest) and still use wow cartos and shorty king diamond batts, just accept the fact will need to change batts and refill constantly. Even with a 2000mah mod and tanks still having to refill at least 7 times a day, and change batts 4. Price you pay for being a heavy vaper.