What is a really good fruit for heart health?

Pomegranite: Any fruit rich in antioxidants, vitamins is good for heart health. However, diabetics have to be moderate given potential impact of some sweet fruits on blood sugars.

All fruit: Almost all whole fruit is beneficial for heart/vascular health because of the large amounts of antioxidants. The best whole fruits would be purple, blue, red, yellow, & green. Eat the skins too because that's where the antioxidants are. Avoid most juices because of their sugar. Goji, noni, etc are good. A diet with processed carbohydrates and rancid vegetable oils will undo any benefit from fruits.

Colorful diet: A variety of different colored fruit and vegetables contain different antioxidants and nutrients and should be included in your diet. If you have to pick one i would say pomegranate in the natural form (better than juice).