Scrapebox is so much more than a backlink tool. Its more of a url research tool helping you scrape, trim and filter urls for use in other programs. Senuke is fine to a point but in all honesty if you're in this for the long haul you will want to think about tools which the 'masses' are not using.
I moved away from Senuke over a year ago for tools which look for platforms that not everyone is using - much less a footprint than the usual Senuke methods. GSA Search Engine Ranker (there is a sales thread here) is probably one of the best tools around at the moment, massive link diversity and the ability to scrape your own platforms to ensure you links are not caught up in the spam traps of today and tomorrow.
