Goliath gives great clouds and good flavor, the goblin gives great flavor with good clouds. Haven't tried the morph, but I'm not too impressed with the Triton's RBA personally.
These opinions are based solely on my builds, so ymmv.
I've heard NOTHING but positive experiences on the aromamizer; that, the bellus and the cthulu are all that's left on my to buy list (for now of course).
I've been really impressed with the goblin, I top fill mine with zero issues and the little guy has impressive flavor, but the build deck is pretty darn compact, I usually use 2mm id coils cause I managed to fry a 2.25 to the chamber wall one time