There seem to be good reviews on all 3 methods; wet sand and polish, Langka paint chip repair and Touchup 123. Has anyone used multiple methods that can compare them? I don't mind extra effort. I just want the best result. But, most importantly, I've not done this before....... fortunately, I do have a '91 Accord I plan to practice on.

 

have not tried touchup123, but can say that langka didnt get the perfection for me that wet sanding does...
might be old fashioned, but sometimes old fashioned is the best way to go still-

 

A few processes rely on the Honda touchup paint which in spa yellow is too thin and too transparent to not be noticed when done. In other words... it sucks.

 

thumbs down for touchup1-2-3 and langka

I've tried both and still prefer application of regular touch-up paint via tiny artist brush. You get a little bubble sometimes but still looks cleaner than translucent chip fills.