From my point of view, I'd go for Xrumer.
i would not go for any of them as SenukeX is father of All
there is one other software which also works very well that is 'xGEN' SEO !
I would go for xrumer when you compare price. I have ranked all my sites top page of google without owning xrumer
both are completely different software, scrapebox is good software and can do many tasks..
if i could have too much money i would buy xrummer
Both Are Fine but Every one need to Create EDU and GOV Backlink
xrummer is best but it is very expensive
I will go for scrapebox
Scrapebox is the best value for the money paid in my opinion, it can do a lot of different tasks
i think xrumer...
I bought Scrapebox. Ihavent used Xrumer yet