I had to listen to my favorite pair for 50 hours before I could appreciate them because they were so different than my expectations for what headphones should sound like

I'm kind of a dumbass, so it prolly won't take that long for you, but yeah, you can't make an upgrade that big and to something so different without needing time to get used to it. Give it 5 days and you may like them more. If not, they're just not your taste. Nobody lied to you

Good luck, homie