I've been using RainX washer fluid but have noticed the wiper blades leave a good size streak right in the middle on the return stroke. Of course the driver side is the biggest issue. I assumed the wipers were the problem but now am wondering if the issue is common to the washer fluid itself. I have seen a few post here and elsewhere that the RainX fluid is not good for rain sensing wipers. It leaves a hydrophobic film on the windshield to help repel water. Does this interfere with the rain sensing ability? I see Prestone is a popular choice but it also leaves a film. I'm typically not a fan of the OEM blades that the manufacturers install on their vehicles. I've never had much luck with any of them. I lean toward Bosch for my replacement blades. Not sure about the fluid though. Any thoughts?