All fruit is good and there's none that should be avoided (unless you're allergic, of course).
Obviously you need to watch your caloric intake - fruit has more calories than veggies and so it's easy to eat too much fruit. But when you're talking about REAL food like fruit and veg, there's nothing that you should "avoid".
That said, fruits with darker colors have been shown to have more antioxidant qualities: blueberries, cranberries, and strawberries all rank high up there in vitamins and antioxidants. Purple grapes have more antioxidants than green grapes, but either are good. Look for vibrant colors in your foods (fruits and veggies both) to get the most nutrients.