I don't have one but a friend did. He didn't think much of it for the reason you cited; it is too finicky to set up.
He only loaded a modest amount of 9mm, .38 S., .357, and .45 each year. He hated to change calibers with it because setting it up took more time than it saved for a few hundred rounds. But, like you, he said it worked ok most of the time once it was adjusted for each cartridge.