Spinnerchief does indeed a good job (although it has other flaws like crashing at startup occasionally)...and spinchimp (although i LIKE the interface!) gives a very weird list in his thesaurus, like the order of the synonyms is not as good as with spinnerchief. TBS i haven't used in ages, as said we do only MANUAL spins so we don't in fact need most features many spinner tools have today.
So what to do? Where you need fresh content always, your resolution is Article Rewriter or Paraphrasing Tool. It is also Article spinner tool that is free as well as easy to use. An article writer always thinks to generate something that has the quality and uniqueness as well as productive. The tool Article rewrite of seo wagon giving you the chance to meet your goal with less effort.
It has helped me to get high quality content fast without having to outsource the spins. I used to spend hundreds a month just on getting article spins for all my client sites and SEO campaigns. It's very effective on getting amazing spun variations of highly relevant and high quality content quickly. You can also go back and use them again in the future since it archives them. I love that. (TIP) Spin 10 completely different titles with your articles for ultimate diversity!