The method of cooking depends on your personal preference and dietary needs. Both frying and deep frying involve cooking food in oil which adds extra calories and fat to your meal. Deep frying, however, tends to result in food absorbing more oil hence higher in fat and calories. If you're aiming for a healthier option, you might want to opt for frying or better still, even baking or grilling. But if you're after the extra crispiness and flavor, and you're not concern about the extra fat and calories, then go for deep frying.