In addition to the convenience factor, cost can discourage people from choosing new fancy fruit varieties.
"Since these fruit varieties result from long-term breeding programs, they will be expensive," said Lianne Roe, nutritionist at Pennsylvania State University. "I saw one quote of $6 per pound for the cotton candy grapes. This puts them out of the reach of the kids who need fruit the most - those on limited budgets."
Even if fantastically flavored fruits can win over taste buds, it doesn't mean they will kick out candy.
People only eat 10 to 20 percent less fruits and vegetables than health guidelines recommend, but they ate 60 to 120 percent too much junk food, according to research published in Public Health Reports by Deborah Cohen of the Rand Corporation, a non-profit research institution.
"If people actually replaced candy and junk food with fruit, that would by definition reduce junk food consumption," Cohen said. "The problem is that people tend to add on, rather than replace."
The key to a healthy diet is to not go overboard on particular foods, said Dobbs. Even fruit can be overdone, because people feel it is a "guilt free" food. A diet dominated by fruit lacks protein, iron, zinc and other essential nutrients. In addition to this, not all fruits and vegetable are created equal. Grapes, including cotton candy ones, don't contain as many nutrients as tomatoes or broccoli, for example.