Sun Jewel is probably still my favorite. I love the first half of Drakken's arc, but Cat Leaper kinda messes things up for me. Not that the inclusion of time travel is bad, I just think that things got resolved way too easily after she traveled back. Sure Becca knew all the stuff that was going to happen, but it still felt too simple. Like the first time, they suffered a crushing defeat, and now they basically mid-diffed these guys. All of the fights were okay (my favorite was probably Weisz vs Laguna or Slyph vs Homura), the Drakken fight is the only one that kinda let me down, because we didn't really get to see him use his overdrive in full effect. There are also a lot more good things, like the reintroduction of Jinn & Amira, The Four Shining Stars fights (Witch best girl), and Shiki's overdrive.
Sun Jewel may not have had as many "hype" moments but I was way more invested in the story. For example, Homura's story with her mom and Valkyrie was great. Weisz got a backstory near the end of Drakken's arc, but it felt really random and unneeded. This arc was built around the backstory of Homura, so it allow me to get more into the setting. The characters and fights may not be that strong, but they give enough fun moments to more than make up for that. The arc also ends on a really satisfying note with them choosing to not revive Valkyrie and Homura taking her place. While I still like the Drakken arc, this arc has some of my favorite character moments in the entire series so far.