As others have mentioned, this is really vague and hypothetical. Way too many variables involved to make any kind of blanket statement.
Ideally, I think you would have a combination. Take some time to set up a few autoblogs and get them rolling and then work on a manual blog. This would allow you a little bit of relatively passive income from the autoblogs while you built up content for your manual blog. Mix it up. Right now I'm just messing with the autoblogs, but eventually, I'm going to diversify. I'm learning an awful lot of valuable lessons with my autoblogs which I can later use for other types of sites.