So I've tried all the flavors and the good news is there is a familiarity to them, especially the cherry and blue raspberry. Basically they've gummed up the ingredient list to give a bit of slush-like solidness to the product. This isn't just frozen ice. There's that bit of slush texture to them which is neat and definitely gets your attention.
That said, there are a few problems. One, it's a fake solidness. There is an artificial quality to the fake slushy texture that can be disconcerting. Two, oh man are these crazy tiny. I'm use to taking my time as I down a big huge Icee from Target or wherever else but I can be done with one of these bars in about 8.3 seconds. Both of these offenses are technically avoidable by simply grabbing two or three at a time...
Disclaimer: I'm not saying these are new since Junk Food Guy reviewed them way back in the fall of 2011, but they are new to me... Whoa. Technically these date back to at least 2009. Both of those reviews were just blue raspberry and cherry, so the four flavor thing is fairly new at least. You know what? I wish they still had the two pack because the cola flavor is weird (almost peppery) and I've got zero desire for a watermelon slush puppy (not that it's completely terrible).
Verdict? not bad
Buy Again? debating it