Animal Kingdom, hands down. I think it's a pretty underrated park. The theming is amazing, it has a really good lineup of attractions (even though they could definitely use more), it has great food & it's a theme park where you can actually relax. There's a lot of little nooks & crannies where you can just chill while looking at beautiful scenery.
Universal Studios is my least favorite park in Orlando. It's not bad but I wouldn't give any of the rides anything above a B (I still need to ride ET, F&F & Fallon though.... I only want to ride ET lol). Diagon Alley is insanely impressive though, the best themed land I've seen; I wish the Gringotts ride matched the land though, it's fun but I was a bit disappointed by it.
Whenever I've been at Studios, I've always rather have been at Islands of Adventure. The difference in quality between those two is insane.
I'm hoping the rumor that Universal is moving a lot of their backstage to Epic Universe is correct. Hopefully that'd open up some much needed expansion space for Studios. Give that park some attractions on the same quality as Pets (just straight up port this over tbh), Velocicoaster, Hagrids & Mario then it'll be in good shape.