im a 23 yr old female and im trying to get into shape, ive recently started drinking protein shakes after i work out, the type i like is pure protein shakes http://www.vitaminshoppe.com/store/en/browse/sku_detail.jsp?id=WP-1092&st=cs&source=FG&ci_src=14110944&ci_sku=WP-1092... some1 told me only to drink whey protein powder shakes, are they correct and is the protein shake i like ok to drink?