I have used alot of the Sonax products (nano polishes, paint cleaner ,extreme wax and wheel cleaner). The nano polishes really do a great job as does the paint cleaner and the wax. I can't really compare it to anything other than the Meguiars products I have also used and find they both seem to have their strengths. The Sonax wheel cleaner works like a bomb though, spray it on dry and it leave it while you rinse the rest of the car. The brake dust literally washes off with a hose and if you use a pressure washer there is rarely any scrubbing or brush work needed. I have also yet to have any issues with polished wheels, ect and the product is also ph neutral as was mentioned and not acidic like most wheel cleaners ;-)
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