There in only a number of protein shakes that you can drink before your body starts to demand real food.
I love my shakes and have an awesome bar blender in my kitchen (2 actually, got them on sale) and shake the heck out of it but when im in training and looking towards a cycle goal I lower the shakes and up my real protein intake.
Finding the balance is the key.
The powder has a higher concentration of protein but sadly has a lack of other nutrients that naturally accompany proteins found in beef, pork, chicken, fish, dairy products, whole grains.
Real protein foods will offer fresh vitamins, minerals, carbohydrates and healthy fats unavailable in protein powder.