I like my meguires gold class very much it gives my dark green Accord a very deep wet shine. I have used both klause products, Ps1s, Zymol and Gold class and gold class is hands down the best for my car. Now before I apply gold class this summer I want to put something under it I have always used klause but now I am out of it and wanted to try something different for extra protection. I was wondering If I could just use just Zaino Z-2 and then Gold class. Would that work out good? Also what about black fire? would I need just BLACKFIRE All Finish Paint Protection or do I also need BLACKFIRE Gloss Enhancing Polish?