Creamy Baked Mac and Cheese

8 oz (about 2 cups) elbow macaroni or your choice of pasta

2 cups shredded sharp cheddar cheese

1/2 cup grated Parmesan cheese

3 cups milk (preferably whole milk)

1/4 cup unsalted butter

2 1/2 tablespoons all-purpose flour

1/2 teaspoon salt

1/2 teaspoon black pepper

1/2 teaspoon paprika

1/2 cup bread crumbs (for topping)

2 tablespoons melted butter (for topping)