<p>I won't use anything else. My last pair lasted almost 4 years.</p>

I use the PIAA Silicone wipers on my Volvo Wagons for the past 10 years because they work well and are well made. The refills are engineered in a fashion that makes them simple to replace and the performance is better that any other wiper I've tried in the past. I replace the refills at 24 month intervals and enjoy better vision than most of the other motorists on the road.