If you're bulking it's ok to have the "not so good carbs" just do it in moderation. Don't attack the macaronni and cheese like it's the last plate of it you'll ever have, know what i mean? The more fiber contained in your carbs the better so stick w/ brown rice, whole wheat breads, certain pastas, potatoes are ok... etc. But like i said you can eat the other carbs just do it in moderation.