Is Rain-X car washing soap any good???

Hi guys, do you know anything about it?

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1996 Z28,HPP+,3.73 gears,SLP stall converter,B&M tranny cooler,Moroso CAI,MSD 6Al,Nittos,Flowmaster catback,LT4KM,waterwetter,Hypertech crank pulley,GMS MAF,BBK 52MM TB,BMR strut tower brace,160 powerstat,flowtech cutout

I like it! I'm on my second bottle, the suds seem to last longer than the other car wash soaps I've tried. Cuts drying time in half. Really helps the water beed off the windshield in the rain also.

I have actually done half my car in rain-x and half in duragloss car shampooo, and the difference is incredible. The duragloss leaves a much wetter, shinier look than the rain-x. The rain-x almost looks like it leaves a film on the car.