I bought three books from this range, having discovered the French one by accident, and my girls (14, 12 and 9) love them. My brother then visited on his way to a two year transfer to Spain, and we showed it to him (declares himself useless at languages) and his three small children (9, 7 and 4). They loved it too, and the 7 year old was sitting spouting phrases in an impeccable accent for the rest of the afternoon.
Having lost my copy to them straightaway, this is my second copy, and I shall continue to give them out and replace them for a long time to come - highly recommended!