I know there's several older threads on this topic, but so many new products have come out since the last thread I could find I thought I'd see what everyone's opinions are now. Dual Coil: Csmnt. Hands down Love everything about this RDA. Dead Rabbit is a runner up. Single coil: Wasp nano. No runner up but will be getting a Pulse 22 soon and we'll see how they compare. Over all is Csmnt. Nothing I don't like about it.