So many people love the Magma..
The magma is real easy to build on:
I have this one: from fasttech

I stopped using it for 2 reasons:
1: plastic in the drip well:
It's got a big white plastic separator block in the drip well, and after 3 months vaping on it and my veritas, I became convinced that the difference I was tasting between the two rda's was the plastic.
I did order one of these though; (hasn't arrived yet)

It's a 22mm version and does not have the plastic.
2: dual coil:
I ran my magma single coil by plugging one side with foil;
quite effective, but still not as resistant to leaking as my veritas.