Waves Harmony

Suitable for your tasks, but requires in-depth study. Seems to have a lot of presets, but they won't do your job for you. As a result, it's not used often, but it's nice to know that plugins have such a tool in their arsenal, because when the time comes to create a chorus from nothing, you'll do it in seconds. I give it a 4/5 for the fact that I couldn't find presets for all occasions.

Tried in vain to get harmony to follow instrument track, but at this price point not a major issue. Set the key and it follows original vocal well enough,providing you sing in tune. As a basic harmony sketch tool it works well enough,but keep it simple for best results.