This is crazy left-field, but I always recommend Ranma 1/2 and Urusei Yatsura. They aren't, like, a lot like what you're asking for, but they're both absolute classics of manga and had an incredible influence on shonen manga the came after them. Both are upbeat, both are funny (especially UY) and full of action (especially Ranma), and are just generally great reads.
If not that, Assassination Classroom is pretty amazing, and maybe closer to what you're asking for.