Best airy single coiler has to be the Kylin Mini II, I run mine 2/3 open slightly restricted, flavour is top draw but the straight glass is useless. The Destiny is good but you would need to fit a 2.5 id coil to get a reasonable amount of air through it. Not tried the new Blotto yet, but the other Blotto's are far from airy. My personal fav though is the Juggerknot MR. Slight restriction fully open but gives super flavour at around 10w lower than all the others.