So, I just picked up the Baby Beast, and wow, I am impressed. This is a bad ass sub ohm tank! I started off vaping on the 0.15ohm Octuple coil head, @ 70W, and the flavor and vapor production is rocking! I then tried the included 0.4ohm coil, and noticed a sightly different vape, but not much. The flavor didnt seem to be quite as saturated, but I do like that it performs comparable at lower watts. Since the 0.4ohmer vapes at lower watts, I assume juice consumption and battery life would be slightly better than the 0.15, which is important to me, but not if I have to sacrifice flavor. I plan on purchasing the RBA head in the near future, as I assume I will be able to get the best flavor out of a nice dual clapton build that I do myself, or some small Aliens. Is this true? Or do the stock coil heads perform just as well as a custom built in the rba? So my question is....out of all the available stock SMOK Baby Beast coil heads, which produce the BEST FLAVOR? Any and all input is much appreciated. Thanks!