I used the service provided by Xrumer Kings on a test site. It was all done in about 2-3 days and they emailed me the info when completed and responded to my ticket.
Like i said though, it was only a test, i've heard a lot about xrumer and i wanted to try it out on a test site, about 100 backlinks have been indexed so far but obviously need to wait 2-3 months to see what effect it has had.