Mine are the Hisuian balls, specifically the Hisuian ultra ball. I just love the design of the latch, and the color palette used for all the balls. I especially enjoy the little flourish on the yellow stripes of the ultra ball!
What's your favorite? Any particular reasons why?
I love to "color match" Pokéballs with the Pokémon inside, even if that means that I have to toss a thousand balls at something not meant to be caught in that particular ball. Example: Shiny Umbreon and Heavy Ball are a perfect match, but Umbreon / Eevee is so lightweight that trying to catch one in a Heavy Ball comes with a big penalty / super low chance of success. Snorlax on the other hand is "meant to" be caught with a Heavy Ball, but I prefer the Lure Ball's look for that one, only that Snorlax isn't a water-type so the Lure Ball doesn't get its bonus catch rate.
Generally I'm a fan of most Apriballs, but I also like the design of the Luxury Ball.
... Huh. So it is. Legends: Arceus was my first interaction with a Heavy Ball, and in those games it gets a bonus to capture any Pokémon that hasn't noticed the player. How odd.
I also totally understand where you're coming from. If I was a more patient person, I'd probably be the same. I am, unfortunately, not that disciplined. 😅
Give how niche / useless some of the balls are color matching is really the one joy you can have with them. Doubly so when you are dealing with apriballs where you often only have a limited amount