Good wiper or not, it's all in the usage. I have used the Michellin but they lasted about a month before the"edges" got dull and started leaving streaks. Here's why for me: I park my car under an Interstate freeway when I go to work. This is a paid parking garage we use. This means tons of dirt gets sprayed below. I only realized this in the past year or so, never quite making the connection between poor wiper performance with it. All the dirt that gets deposited between the blades and windshield become irritants -- sort of like sandpaper. Eventually, the blades lose their edges and streaks appear. Now, before I drive off the parking lot every evening, I lift the blades and blow off the dirt and dust well. My guess is that the same mechanics are at work for all blades. So clean the windshields often and take the deposited dirt off the contact area between the blades and windshield.