Gasmask - I buy my OEM wiper inserts at my local dealer. They're not worth shipping from St Charles, MO.

My wife's Audi A3 came with those Valero wipers, I believe, and they've been good through the winter. I like their low profile - makes for very low wind resistance, so they still press the glass at 90+ mph. Is the blade on these made of rubber or silicone?