I use the cleito tank and got onto it from buying a K4 ages ago. The .27 gives the best flavour by far of all the cleito coils, but it has a slightly shorter lifespan than the .4 which is what i use now. The .2 like another said can be a spitter as can the SS .4. I have never found it possible to make the .4 no matter what power setting i use, on a Wismec RX 80, taste exactly like the .27. My misses uses the same mod and tank as me and i once put the same juice in hers and mine but with the .4 in hers and the .27 in mine they are just a bit different thats all. Yeah the .27 vapes as smooth as doesnt it, the .4 a smidge less so, but it lasts longer.