Tonight's Side Dish: Tomato Feta Salad

4 pints grape tomatoes, red or mixed colors1 medium seedless cucumber, peeled and diced1 1/2 cups small-diced red onion (2 onions)1/4 cup good white wine vinegar6 tablespoons good olive oil1 tablespoon kosher salt1 teaspoon freshly ground black pepper1/4 cup chopped fresh basil leaves1/4 cup chopped fresh parsley leaves1 1/2 pounds feta cheeseCut the tomatoes in half and place them in a large bowl. Add the cucumber, onion, vinegar, olive oil, salt, pepper, basil, and parsley and toss well. Dice the feta in 1/2 to 3/4-inch cubes, crumbling it as little as possible. Gently fold it into the salad and serve at room temperature.