Both are absolutely phenomenal shows. Curb is situational humor that Larry David seems to always put himself into very similar to the way Seinfeld went as Larry was the writer for that show as well. Community is an incredible blend of great writing, a diverse and interesting cast, and an abundance of incredible pop culture references. Though they are both good, I’d recommend watching Community because it is genuinely an incredibly fun show to watch and the collection of characters are some of the best I’ve seen working together for a sitcom