I've tried a couple versions of the 5, and I must say, I'm a total gum whore thanks to this company.
Solstice "warm and cool": tastes like a kid ate a bunch of play-doh and then threw up.
Zing "sour to sweet bubble gum": Fantastic. Doesn't taste sour at all, but I like it that way. It's bubbly and yummy.
Cobalt "the cooling peppermint": I love this one. You can't go wrong with it. It's definitely very cooling, like drinking a glass of icy water, and it has a wonderful peppermint taste.
Flare "the warming cinnamon": No stores near me have this kind. In fact, I've never even seen it before outside
the website.
Rain "the tingling spearmint": This one is probably my favorite. It's strong on your tongue at first, kind of like mouth wash is, but it tastes fantastic. It wakes me up better than coffee does. I love to chew it in school. Definitely recommend.
Lush "the crisp tropical": Weird. It tastes really fruity
like this gum does. I, personally, do not like chewing fruity gum, but if you do, this one is definitely for you.
Elixir "the mouthwatering berry sensation": This one is rare where I live. It was in a local gas station once, and my sister got it, but other than that one time, I've never seen it here before. I did try a piece, but it was so long ago that I don't remember anything about it.
SO, overall, I recommend
Rain,
Cobalt, and
Zing.