What are the best clear coats these days. I remember using micro gloss and dull back when the stuff was kinda new. It yellowed and had to carefully using very fine sanding sticks got enough off to refinish. My buddy use to swear by futura floor wax but said they changed the formula and it didn't work as well. I know some products are more stable won't yellow if hit by sunlight. Maybe gunze or one of the Japanese companies. Appreciate any info and advice.