Hey twitch.. I got my nice red KGO from Virgin Vapors, but Dark City has them and so does Hoosier ecig Supply. I absolutely love my KGO, and I started with a slim design like yours.. it's a natural step up. I'm getting almost two days out of the batts before they need recharging. For cartos, I recommend Boge 2.0, EMDCCs, and the 1.7ohm low rez single coil resurrectors from Crystal Clear vaping are my favorites. I know you'll be happy with a KGO!