Wild Berry is the best. Sour ones are too sour. Tropical is just gross. Haven't had smoothie ones. Original is also yummy. I don't eat Skittles a lot though.
I prefer fruity smarties! They're like skittles only better lol. The original ones for me, especially the red and purple ones<3! I haven't tasted any of the other ones apart from the sour ones and they made me face scrunch up >.< Horrible lol! I can't stand anything sour.