Sorry should have been more specific. Genesis RTA style
I know this is an older Genesis style, but my go to device is still the AGA T-2+. I prefer it over the AGA TD they just came out with. The AGA T2 holds 3ml of liquid, can be setup easily for single coil or dual coil, wick or mesh, easy capture points, great options for the deck, is stainless steel and glass and is the right diameter. It's served me well, has given me less hassle to setup and use, gives great performance straight out of the box. I did drill the airhole a bit larger to accommodate my vaping style, but that's easy to do.
My vote would be an AGA-T2+.. great genesis style.. I haven't found one to replace it yet.