I've had some experience with the Bitmixer bot and it definitely seemed that using a bot made things much easier for the operator. Despite (or perhaps due to) the fact that almost everything was automated, most of the participants there were quite satisfied with the campaign and everything worked fairly smoothly. Other campaigns (which I won't mention here) also use similar bots but it seems their experiences weren't quite so trouble-free.
Bots are probably cheaper, I would assume, since there is no need to pay for a separate campaign manager. Bots on the other hand are probably easier to take advantage of as well. And even with a bot, a little bit of work might still be required for checking posts, making adjustments to the bot, responding to queries, etc.
Which one do you think is better for managing a signature campaign? And when choosing a signature campaign to join, which option would you personally prefer?
EDIT: Added a poll as per twister's suggestion.
I would think both would go good hand in hand.
but I have to agree bots can and will be faster but also miss somethings that humans cant. bots cant think logically so an issue could arise and a bot will probably deny it.
so why not use both, the price of maintain the campaign might be more expensive but better to pay for quality posts.