Owner is a scammer who has been banned from major SEO forums for fraudulent and deceptive practices. You might be willing to look past the fact that the owner of this product creates fake accounts to post fake reviews and lies about the product if the product itself was actually good, but unfortunately Spinner Chief itself is filled with half baked buggy features (which are advertised as working completely) and can't go more than 10 minutes without crashing. All in all it is a complete waste of money and time.
We tried and we tested. We spinned and we unspinned. After all said and done here, I think you should have already made your choice about which spinner is best for you. If you will be doing a lot of manual spinning, then The Best Spinner is probably the best choice. On the other hand, if you will be using the spinner just for automatic spinning, and you have enough capital, WordAI is the spinning tool for you. But if you are still on a budget, Spin Rewriter is your spinner. However, if you are going to be spinning text in languages other than English, you might want to go with either Spinner Chief or Chimp Rewriter. The choice is all yours. You can now make an informed decision.