Well I threw in some celtic coils dual coil setup in the big block with my beyond vape beacon and a vtc5 at.2 ohms. So I basically am super sub ohming in a day lol It's working awesome the flavor and heat is awesome off this device with these coils, To me though I think a regular old dual coil kanthal build isn't much worse or better than this. I mean the flavor changes some as with the heat but not a huge difference honestly compared to just using regular kanthal. That's one thing I truly been wondering is how much do different coil builds change the flavor and it basically comes down to how much surface area, how it's wicked, and the resistance. It all basically tastes the same way, The celtic wire if you don't know is 3 28g kanthal a1 wrapped and then flattened, they do give off a damn good flavor as obviously they're covering a ton of surface area. I had to turn them at an angle to get them to fit in the big block lol they were too long to be a straight vertical coil, The resistance of this wire is really low it's the only thing I don't like about it because I can't use it on a regulated mod unless I single coil and wrap it at least 8 times.