Copyscape and DupeFREE enough?

Hi,

i reveived my test articles from eLance today.

• I checked the article with DupeFREE and found 1% and 16% duplicate content compared to both ezine articles i provided to rewrite = good!! The goal was around 85% uniqueness.
• The Keyword densitiy is around 2% = also good!
• I checked the article with Copyscape Premium = Nothing found.

Is there any other option i can have a look on to test?

You probably don't need to but I also use plagium.com

I tested one article with plagium and got nothing then i tested it with copyscape and found results... It happend several times yesterday that copyscape was able to find results when Plagium was not...

In some cases both failed... Simple "------" worked and got me results where both failed... Dunno if there is any tool which will give more correct results but till then I am also using all 3 to get best...

I think Copyscape is the most reliable.