With 17 voicebanks in total, GUMI is currently the VOCALOID with the most voicebanks. You don’t have to edit much with her (unless you want to), her voice is pretty cute. Kizuna Akari is added to the list of “beginner Friendly” vocaloids according to her devs. I know that CyVa and CyMan are pretty easy to use too, and Una and Kizuna Akari for japanese.
