I received this as a promotional item to review ......I'm pretty impressed with the steel of the knives I have not had Ninja knives before, I've seen commercials of them before, i'm hoping they last a long time, The sharpener is not really something I would use that much but it adds value to the Knife set so that is a big plus.  After having wooden knife blocks for over 30 years, I'm not sure like the plastic holder but I understand this is the way most manufacturers are going, the good side of this is I can keep knives and cutlery sanitized and clean a  little better.