Bests & Worsts Reviews from Amazon

I have used an Oxo can opener for years. I needed an additional can opener and bought an Oxo from amazon.com, but the second time I used it, the cutting head bent over while cutting around the can. It is no longer usable. I believe it is not a real Oxo. I will buy a replacement Oxo locally from Bed Bath & Beyond. One star is one too many.