Riverhead or Lancope?

Nanogers, Did you ever tested Riverhead or Lancope? I know rackspace uses one or both of them. Are they good products and worth the try? Can they really decrease the the DDoS damage? Are they better than CISCO products? Are there any tips? Thanks, -J __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com