You have some choices still. If you want a single coil carto, you can go with either a Boge 3.0 XL, or a Smoktech 3.2 XL. If you want to stick with Dual Coils, either a Smoktech 2.0 or 2.5 XL Dual Coil would work as well. I haven't found any Boge Dual Coils that are equivalent, so someone else...