the only thing i can say thats bad about powder coating is if you do kerb/damage them it will chip off in a big chunk. When i had new tyres fitted they prised the tyre on with a bar on one wheel and chipped a chunk off the rim, didnt notice at the time as it was dark, found it next morning, too late to go back :-( ive had to just dab the chips in with some of my gfs chrome effect nail varnish, its a good match on the clean wheels, you can see it stood looking at them, unless you're looking close up