And this highlights just how subjective the whole thing is. I almost exclusively use unflavoured juice. The doggy seems to kill the natural slight sweetness and brings out a harshness that just isn't apparent with the other tanks... There's nothing fundamentally wrong with it (no leaks, no gurgles, dead easy to build and wick) but there's just not enough right with it - yet. Maybe I'll crack the right build for me in it. Even the ammit MTL does a better job for me. The three I use most (prime, galaxies, ammit) are all different from each other too, but the doggy is just that bit too different to suit me.