I haven't had very good luck with frameless wipers. I've tried two different brands (Rain-X and Bosch I think) and they both left streaks. It's a shame because they look really cool, but they don't seem to function that great, so I'll be going back to traditional framed windshield wipers next time.
I have had my car for 5 yrs, only been thru 3 sets of wipers. 1 set from the factory, the other 2 being the rain-x brand. I had the car for just over 3yrs in Tacoma, Washington where I saw plenty of rain and never once had an issue. Idk maybe I was lucky or something. But I run the rain-x on both my subies and as long as I keep the windshield and the blades clean they work great.