I have an Innokin Cool Fire 1, and I really like it. (Still a little afraid of mechs) I have a kayfun (Ehpro) lite +2, a Smoktech RSST and a Smoktech RSBT that I use on a Tesla and a Sigelei VMAX V5, and love it! I have become decently efficient at building micro-coils using 28g kanthal. I would really like to build another one for the Cool Fire 1. I have been using a Protank 3 and the Iclear 30b on the Cool Fire, both with coils around 2.0 ohms. They work great, but neither gives me the satisfaction of the RBA's. Common sense tells me that I can just build a 2.0 ohm micro-coil for the Cool Fire, but I am skeptical... RBA's and micro-coils are quite different from the standard off the shelf builds. Any suggestions on a coil build for the 8.5 watts of the Cool Fire? Is it even possible to build an RDA that will give me a good to very good vape on that device? Any and all suggestions would be greatly appreciated!