Let me tell you a little story. For those of you who don't live in Pennsylvania or the East Coast in general, we have this kick-ass convenience store called "Sheetz". Well, you know those big mugs you can buy for like $5 and get cheap refills? Well, at Sheetz they have an Icee-type drink called the "Fizz City", a 64 ounce slushie for 95 cents.
Back in the day (last summer) there was 239845093485 flavors to choose from. It was cool- one time my sister got green apple and mixed it with alcohol. To this day she can't drink that flavor of Fizz City...but anyways, that's besides the point.
A month or so ago Sheetz decides to get rid of HALF the Fizz City flavors and GET A FUCKING MILKSHAKE MACHINE. DAMMIT. The milkshakes are decent, but you can do better at Arby's. So anyways, that's my story.
BTW, vanilla is the way to go.