there are endless possibility's I have a .19 duel stovetop and a .19 parallel coil set up both made in 24g they throw some huge clouds wicked with cotton. I also have a 1.0 ohm flat ....... that makes much more vapor wicked also in cotton and I have a .7 build micro coil cotton wicked and its just ok. there are many variables such as coil design, wicking, mods used and is it capable of delivering the power needed for such clouds. and also very important Air flow and this leads me to the final build. I have a duel Macro yes I said macro, dragon build in an omega. I put the ends of the coils directly on front of the air intake holes in the base there about 2mm from it and angle up at 45 deg. The vapor from this build at 1.3 ohms destroys everything else I have and it destroys every build its been up against as well. Air can enter the coil only on this build because the rest of the surface around the opening is cottoned this forces every bit of air into that coil and the reason I made it Macro. There are also other things that can be done to produce even more vapor from a unit that already makes big clouds like drilling a small hole at the base of you 510 drip tip. IMO any design has the ability to make huge clouds if designed, wicked, and laid out well enough to take advantage of the atomizers strengths. Then you just need a decent mod to power it.