Only standard WordAI spinner showed 12% match for me in Copyscape which is very good I think. Also I will add that for SPAM links in general you don’t need any quality at all. if Google crawler can’t find connection with other spinned articles – goal achieved. Sorry, but I don’t see that with expensive spinners as Copyspace shows that in plain sight.
Many people will outsource this task to well educated content writers and can be a pitfall when it comes to getting that quality content written for your website. This is especially true in the 'you get what you pay for' nature of the business when it comes to choosing an adequate content writer that is not only cheap but someone that also produces high quality articles which are relevant to the subject.
For many years people used article spinners to mass produce unique content from one source article without really thinking about the quality and the human-friendly flow when it came to a real human having to read the content they landed on when visiting the website. Much more emphasis was put on producing content that was purely made to fool the search engines and rank the website accordingly.
To rank your website in search engines you have to post content at your website on daily basis. If you have more than 2 websites then it is almost impossible to write unique content on all those websites. To do this task webmasters use article spinning tools so that they can post articles to their domains daily. Paraphrasing Tool is also used by students when they have less time to submit their assignment; they just copy content from the internet, rewrite it, remove grammar mistakes and submit it.