I have the Greenstuffs all around on my car. For street driving they are a definite improvement over the stock pads. When they were new, they dusted a lot less than the stock pads. Now, they dust about the same as the stock ones did. I get some squealing noise sometimes when lightly braking.
I like them well enough that I'll let them wear out before I replace them.
I have about 14,000 miles on them right now.
HTH
Mike