Is it any good? Was going to order [[http://www.lloydspharmacy.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=1008&storeId=90&productId=347748&langId=-1&parent_category_rn=18436&top=&top_category=18429&fromPage=&hotspot_prefix=TOILETRIES this one]] as am naturally ginger/blonde and I can't find anything to cover my grey [sad] Have been using nice n easy but it fades after two weeks... is this any better?