The Lumi wins the beauty contest hands down. It is the most attractive of the disposable tanks I have and has the best AF control. But so far performance is not so hot. Mine is reading .27ohm and I have tried it at 30 W to 40 W and the flavor is muted at best but really I think it is more a cotton flavor. This has prevented me from getting though a whole tank because why put up with that when you have, say, a Mystique right next to it with the same liquid and spot on flavor? I have another Lumi and will ditch this first one soon and let you know how round two goes. I don't remember doing it, but maybe I scorched it with too much power right out of the box as Mystique has lower ohms. I don't remember doing that but I did toast a fresh Jewel right out of the box by not letting it soak long enough before first fire. Good thing they come in three packs!