I bought this knife set about a month ago and i love it. I am a huge ninja brand fan since everything they make is such great quality. The knives have a great heavy and solid feel with the full tang handle you know they will last. I haven’t used the sharpener yet since I’ve only had the knives for a month and haven’t had the chance to use them enough to dull them so I can’t vouch for it yet but I’m sure I won’t be disappointed. I do cook pretty often, about four to six days out of the week and use all whole foods so I do use knives pretty often and I can easily say these are the best knives I have ever had and I don’t think I could have picked a better set to have for the rest of my life. I’m sure these will outlive me and I’m only in my early thirties.