I've ranked websites in the past with spun content, and now they are still on #1 position of google. First year (2014) google found me because my spun was really bad, many paragraphs were just copied and my position drop from #2 to around #20 after a panda update. Later I cleaned all my text with better spun (I didn't buy any article!), my ranking went up again, and with more backlinks I reached #1 and it is still there
Sometimes the tools called paraphrasing tool, why it is so called? As the tool use the logic of changing words according to its synonyms to make an article unique and meaningful. If we expand the main logic behind the tool use the word synonyms of targeted article that you will rewrite or spin, giving you the options to replace the word from its dictionary suggested by the boot as well as option to write your own, it’s simple but it’s superb.