I know i have a hand picked one.... i picked it.
The deal was simple , a friend of mine had the stick previously and we made some extensive testing. So i was pretty safe. And besides, it has a lifetime warranty on it. Cant feel safer than that.
However, most of my friends have OCZ sticks with excepcionally low problems. I've read mostly in foreign forums (since i am from Portugal) the problems related to these memory sticks, and not "just a few". It is kinda weird since here we havent experienced those types of problems. Maybe we got a good batch.
But we dont really have that much choise for performance memory, there's alot of OCZ, but finding Corsair is very hard. Twinmos and Kingston already can be found at regular quantities but only recently.