>>58119502
DP's visuals haven't aged the best outside of some key episodes by Iwane, Tamagawa, and others. That being said DP is still my favorite.
I just really liked Ash's Sinnoh story. His team was a bunch of jobbermons who got bullied throughout the show, and it was great to see them finally win in the end. XY, Ash doesn't have a true antagonist like Paul to keep the battles interesting. Everybody in Kalos likes Ash or has a crush on him. Even Alain!
I think Pokemon Showcases were weird too. It felt like a girls-only version of Contests, and there was no basis for it in the games.