I have 9 or 10 apple trees and 4 peach trees. Wifey makes a lot of apple pie, which is awesome, and homemade applesauce kicks ass.
The peaches are amazingly juicy. You need a bib to eat them.
I agree with DWB, pineapple is the tastiest. But the ultimate is in the arguement of, "is a tomato a fruit or a vegetable?" If tomato is a fruit, then it by far out weighs everything. Tomatoes in the garden is a must have. Tomatoes in the freezer for winter is a must have. Fresh tomatoes in a salad, on a sandwich, sliced up plain with some salt, awesome. Homemade spagetti sauce and chili made from tomatoes preserved from the garden in the middle of winter is to die for.
So my vote would go to the tomato.