Since we are talking about windshield wiper blades, thought I would pass on experience w/high performance "SilBlade" silicone wipers. I used them for two years on my old truck w/no noticable degradation (sold truck)and really like them. No other wiper blade used has performed as well in rain or maintained their performance.
They are GE Silicones by Specialty Silicone Products, web page is:
http://www.sspinc.com/wipers.cfm

note: started new thread to help future searchs on wiper blades.