I’m new on this of online business thing, and English is not my native language. In spite of that, I have written my first pages and posts by myself. I totally agree with what you say here. There is nothing more satisfactory than to produce your own content, even if it is not perfect or excellent in the beginning, but with time and practice, it will surely improve.
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.
Google is getting VERY good at catching spun content so you'd better be talented at manual spins. If they DO catch you, of course they'll spank you... and hard. So anything you use spun content on is inherently AT RISK. Worse yet... Google gets better at finding spun/poor content every year. So in the longrun you're screwed. I'd weight your other options and see if you couldn't find a cheaper source for manually hand written content.
Nobody is immune to spelling and grammatical errors, not even me. It doesn't matter how many times you proofread your content, sometimes an error slips through the cracks. But, too many errors in your writing are bad for article writing services business and can also hurt your reputation over time. If customers are annoyed by poor grammar on social media or on a small blog post, just think about how they will feel if they receive an email or eBook laced with these errors.
Conclusion, if it boils down to speed, money and most readable spun content SpinnerChief Ultimate is what you want. If you’ve just got to have a web based solutions then WordAi is what you want. Remember we are using the cream of the crop here Word Ai Turing Edition and Spinner Chief III Ultimate. I believe the majority of users will opt for SpinnerChief Ultimate over WordAi Turning due to WordAi’s cost.
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.