I agree that starlings can be a serious nuisance. Bird food isn't cheap, and starlings can clear bird food in minutes.
Fortunately, I haven't actually found them to be a pest, so far this year.
When starlings are a pest, then I try to keep scaring them off. If scared off, they then tend to congragate in nearby trees, watching, and waiting for you to go inside. As soon as you disappear, they will all swoop down again. But if you maintain vigilance, and keep scaring them off, they will eventually get the message, and go elsewhere.