Honestly it might cost a little more than the "blue" fluids out there but recently my wiper blade died when I was driving on the highway because I had used Rain-X the water beaded off my windshield enabling me to see - well worth the couple of extra bucks ..and bonus it clears pollen/dirt quite well too :)
Ok...so it's RainX - I was hoping that this would save me the effort of putting RainX on myself and then the next rain I encountered would must magically wisked away as I drove down the road - that did not happen - hardly any beading up like the real RainX that you manually apply to your windshield. Another thing I did not like - was that it seemed to leave some whitish colored streaks on my windshield - and I kept using more RainX cleaner to get rid of the streaks!
It's more expensive, but it adds a coating that makes water bead up and fly off. If you have a choice, get this stuff.
This item works great to maintain your Rain-x protection on your windshield as regular washer fluid degrades the Rain-X protection that you apply manually.