chobit

I buy the first one here on the list: http://www.tirerack.com/accessories/brands/valeo.jsp

It is buy 1 get 1 free, and the wiper works very well.  I also like to use it along with Rain-X products.

1st with regular Rain-X, then I'll also use those Rain-X wiper fluid.  It works so well to a point then my wind shield can stay clear for more than a year.