Debating on which iud to get

I’ve been on hormonal birth control for about 6 years (first the pill then nuva ring). I was originally leaning towards getting the copper iud because I’m sick of having extra hormones in my body but I’ve seen so many people say that the periods are brutal. The one my gyno recommended was the one with a tiny amount of one hormone in it (I forgot what it’s called lol) but I’m unsure. The copper one is also only 99.2% affective whereas the ones with hormones is 99.8% affective. I’m so torn on what to do. Any advice or stories? (Either good or bad)