Although I haven't tried other types of Rain-X conventional wiper blades, I can't speek for them. I myself, wouldn't consider the Rain-X WeatherBeater blades as they are just another conventional blade design with the "pressure points" in the metal housing/holder. Even if the rubber blade itself were something special, I want better still!
I bought the Rain-X Latitude and Repel's beam style wiper blades last fall(Sept/Oct) prior to winter for 3 vehicles and loved them on all vehicles. Introduced others to them and their reviews are the same as mine. So, in my circle of family/friends, we have a variety of vehicles using them with good/great succuss. SUV's, Mini-Vans, Sedans, Coupes etc.
Different angles of windshields as well as many lengths of wiper blades...17"-28" and all are working well.
I bought the Rain-X over other beam style wiper blades due to their price at that time as I beleive beam style wiper blades work better than most other types especially in sub zero temps.
The Latitudes and Repels are the same beam wiper blades according to the Tech Service 1-800 that I spoke with. I was told that they're just marketed differently.
CR Mag rated the tested Latitudes very high, maybe #1 but, IDK, compared to Valeo, Bosch Icon etc. Other online reviews and articles that I read prior to buying, rated them very good as well. No wiper blade is perfect as they can all streak when debris collects along the wiper edge. Kept clean, they work flawlessly IMHO! And their quiet/smooth.
I bought them for about $10 each when they were on sale along with store coupons and rebates(PB's/AAP).
Any cheap wiper blade IMHO, works well in warmer temps(Spring/Summer) but, when the temps drop and there is snow/ice road salt along with nearing zero temps, this is where I have always had issues with wipers including the more expensive blades. I have tried dedicated winter wiper blades from Anco/Trico, installing them just prior to winter and I was still dissapointed in them as winter was ending.
Bosch Micro Edge Excel's worked quite well but not nearly as well as the new "beam style blades".
I'm older now and quite a bit fussier than when I was young with better eyes and at night. These newer style "beam" seem to be the best for me although I have read from others, a totaly different review. I think it depends on the vehicle.