Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great knife, better company

I've had this knife for several years now. The blade's been very durable, and the coating has been as well. The speed safe gunked up a little, but nothing lubricant couldn't fix. This has been my go to pocket knife for several years.Recently I noticed that the safety was no longer keeping the knife from opening. I contacted Kershaw, they told me that I probably had sharpened the knife too many times and shortened the blade. So I sent it back, waited two weeks, and Kershaw had sent me back a brand new knife. Awesome life time warranty, definitely will buy Kershaw again.