Unique Content programs

Hey all, I am interested in purchasing one of the programs below and was wondering what you all thought of each and the differences of them? I thought about the WP-unique first since it can plug right into my WordPress site. But is it as good as the others?

Article Rewriter Wizard, The Magical Content, Real Time Please, or WP-Unique Plugin

they don't really provide you with unique content they just spin it to make it more different then the original one