I have had mine for almost 15 years and it still works like new. I get quite a bit of use out of it, and the blades are just as sharp as the day I purchased it. I have never used the crinkle cut blade, because I have no use for it. I do however use the other three blades quite frequently, and the cuts come out perfect every time. The V blade is a plus, because it makes slicing much easier and faster. The adjustable thickness is also a big plus. I am beyond satisfied with this mandoline, and highly recommend it.