Bosch wipers vs others
I have used Anco, Trico, Bosch, Trico Teflons, Rain-X, and others. I find that the Bosch work great for about 6-8 months, depending upon how much heat/sun they get. After speaking with the Bosch rep about them, that's about how long they'll last, and they tried to get a compound that would hold up to the heat and yet remain pliable, so in order to do that, they compromised and have a great edge on them, but after about 6-8 months, they won't clean like they did before.
I got all excited about the Trico Teflons and bought them for all my vehicles when they came out. BIG MISTAKE!!!! After about 3 months, I started having streaks across the windshield where the blade holders clip around the blade from some sort of teflon buildup on the windshield. Man was it hard to see through those lines where the blade did not wipe clean. And even harder to get that darn teflon off the windshield... I took all of them off and went back to Bosch. More expense! I even called Trico and complained, but I still have a bunch of slightly used blades in their packages hanging on the wall in my garage to remind me never to purchase them again!
Anco, Trico regular, and Rain-X all last about the same amount of time here in Virginia, 4-6 months of good service.
I have not spent the money for silicone blades, but maybe I can take the plunge next time...