Manual spinnig is still needed when you want to create ultimate spun and readable articles. You must spin paragraphs and sentences if you want to create the ultimate spun article, it used to be a pain to spin huge articles in paragraph and sentence mode, the nested text always made it diffcult to find the right sentence. But now, with SpinnerChief 5's spin tree function, everything becomes clear and easy! All paragraphs and sentences are organized very well, you can locate, modify and spin them easily.
Imo it is not possible for google to detect properly spun content, it is not worth computing power it requires. They can do this using ngrams for example, but it is uses a lot of queries. And for example article spinner I coded beats this algo, so google cant detect that the content is spun. Manual spinning is also good but it takes more than 30 minutes per article.
It’s just okay. Maybe I expected too much but it did not save me much time at all with all the changes I had to make to the articles. I used it on the “readable” setting and allowed it to automatically spin paragraphs, sentences, etc. Well it was actually “readable” but not human readable, also there is option for human readable articles, but it will be not 100% unique.
Spin Rewriter 9.0 is available exclusively on their website from the 4th October 2018.  If you test drive their software for free before the 4th Ocboter 2018 you will be testing version 8.0.   Get a free consultation to see how the Spin Rewriter 9.0 can work for you. Their professionals are there to assist you with your article rewriting questions and concerns.