I didn't find Pro Gold much better (if at all) than White Lightening. Last week I started using T-9 and I'm impressed. I've done 200 miles on the first application, including a 35 mile in the rain, and so far it has held up with no need for another application. Pro Gold never held up for me that well. Even the slightest drizzle would seem to wash it off, just as with WL.