My wife brought home a slice of Snickers and a slice of Peanut Butter Cup for our anniversary, and we both loved the Peanut Butter Cup. Reading this thread, I'll have to try the Key Lime and Which Chocolate Macadamia ones at some point in the future. I might also have to try the low-carb one.
For those who like Key Lime cheesecake, there's a really simple (and tasty) recipe for a Key Lime Pie that's similar to cheesecake on the side of Nellie & Joe's Famous Lime Juice. It's basically just a pack of cream cheese, a can of sweet condensed milk, three egg yolks, and 1/2 cup of their juice.