TWP300 failed on IPE; f/u: AC Mahogany or TWP 1500?

I live in California, in the Sierra foothills, temperatures range from the teens and 20's in the winter to mid-100's in the summer. Deck is partial sun with overhanging oaks and ponderosa pines. It does have mildew/mold issues, especially on shaded N end of deck. IPE deck installed in 2002 -
TWP300: Works extremely well for redwood siding, but on IPE immediately very susceptible to scratches bc it is a finish after 1 coat. 2 years later I had a contractor strip and apply an Olympic product, that has failed. I decided to let it go, but now I want to restore color. So, my plan is to use RAD strip & brightener, f/u with Press Wash, and then apply TWP 100 or 1500 or AC Mahogany. I thought the general recommendation for IPE on this site was AC, but I noticed one post in which TWP was mentioned. I realize since I'm in CA, if I use TWP, I have to go w 1500, but if I was in a non-VOC state, would 100 be a better bet for IPE? Do you generally recommend AC over TWP?