Western Animation definitely for me.
I like some Anime like Death Note, or Samurai Champloo, but most of the time I find anime like Naruto, Bleach, and One Piece kinda bad; the sweat droops and vein things can get real old really fast, and fanservice is such a cheap way to keep fans giddy which a lot of anime keep on doing and tbh I'm real sick of it. Anime are also generally ridiculously long with whole series reaching over 600 episodes (I am looking at you One Piece) and each episode only contains around 20% new content and story progression with the rest being a really long intro that you'd always see, a really long recap, unnecessary flashbacks, and then the really long outro. Also, I'd like to disagree with OP here, Anime normally has really bad animation imo; when characters talk they normally look like pieces of cardboard with lips just moving up and down and the tenaciously long anime fights are usually nothing more than slowly moving and panning out stills. Ridiculously long fights in anime also baffles me tbh; who the hell thinks out loud what they're going to do in five seconds!? Don't tell me, show me.
Western Animation though: Avatar, My Little Pony, Adventure Time, The Amazing World of Gumball, Over the Garden Wall, Gravity Falls (let's not forget all the amazing movies Disney and Pixar have created.) I am in love with them. Unlike anime, Western Animation endeavors to synch gestures and lip movements whenever characters talk, which gives characters more life, which isn't what animation is supposed to do? Fights are realistic; quick and short, compared to anime at least. Fast, fluid, smooth. And when it comes to story, unlike anime which tbh feels like is wasting my time with episodes that barely accomplish anything, Western Animation episodes are always chuck full of events and has a coherent storyline that feels complete; from Act 1 to Act 3, problem arises, climax, resolution. Lastly, Western Animation stories actually end at times, and they end at a satisfying note, unlike anime like Naruto where we're all "Ugh, Finally." I'd also like to praise soundtracks in Western Animation because my god Anime just loves to use the same ost over and over again, it's repetitive.
But ahem yeah, that's just my opinion and experience with Cartoons and Anime.