I’m not hard to please, just throw in an epic mecha fight with beautiful animation and score and I’m beyond happy so of course blackout, defender of all universes, and lion’s pride part 2 are instant favs. 

Other favs include the hunted, the legend begins, blood duel, kral zera, omega shield, the way forward, the feud, and the ruins. I can’t think of any from the first arc at the moment other than blackout but that was the highlight of the first arc without a doubt so it’s overshadowing the rest. I also don’t doubt that the next and final season will have new favs of mine since it’s Haggar as the big bad centric and the official series finale which if you haven’t noticed, defender of all universes and lion’s pride part 2 already felt like series finales so I don’t think i’ll be ready for Haggar herself in a mecha.