I switched to eating cacao nibs instead of chocolate bars. Other people ask how I can stand the bitterness, but I like the bitterness. Just like black coffee's bitterness. Why blunt the bitter, it tastes good.
I don’t mind the bitterness, but find the acidity unbearable. I’ll eat unsweetened chocolate (which is still bitter) gladly, but it has to be dutch-processed, which removes the acidity. Cacao nibs… just nope.
I try to keep my chocolate bars at 95% cocoa... less than that and I plow through them.
I ate a lot of 85% for a while but recently read about lead and cadmium contamination here and significantly cut back.