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.
WordAI automatically rewrites entire paragraphs and sentences – this functionality is offered by most content spinners nowadays, but not many are good at it. WordAI tries to understand in the best possible way, not just the words in the sentence, but the entire meaning of the sentence as well as its connection to subsequent sentences in the paragraph.
Country of origin for 26.1% of all visits is India. It lies approximately 8270 miles away from the server location (United States) and such a long distance can negatively affect website speed, as it takes some time for data to travel back and forth between those places. That’s why one of the best ways to speed up page load time for the majority of users is moving the server to India or just closer to the user base.
There is a completely new feature - Team Version, SpinnerChief 5 is the only article spinner that has a team version now, which is especially designed for team using, create/manage/use team thesaurus with team members together, and multi-users can use the license on different computer with themselves member accounts. Manager can manage team members easily.

Readable And Unique Content – the recommended settings for this one are the same as for the one above with the only difference being the change of the 1st input to “Readable”. This will create more unique versions of your content while still keeping a high level of readability. Generally, this is the best setting as it gets a good balance between human readability and uniqueness of the content generated.