I'm using a pair of Teflon blade from the brand Trico. you can get them from Lorco. very nice blade, I've had them for 2 years already..still acceptable. but some cleaning is always recommended la, just give it some gentle cleaning while you are washing your car...
For those C9s....just dumm ass. last time i was almost hit a c9 too. typical case... she was turning left at the intersection... and she stepped on the gas, seems like going..then sudden stop again. I was like...fxxk (with at least a 5 sec horn)