Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Think twice before buying Wusthof over Henckels & Forschner

I have owned Henckels knives for years and when they get dull they are very easy to sharpen to a razor sharp edge by one's self. But with Wusthof knives I never seem to be able to get them as sharp like a Henckels Knife(and plus the factory edge on Henckels is much sharper than Wusthof). I would definite think twice about about how easy it is to sharpen a knife before buying it and Wusthof is very difficult while Henckels and Forschner are very very easy.