It really depends what your going to do with the article? If your intention is to upload it to various article directories then it must be unique, and also readable. I make sure to submit 60%+ unique articles to places like ezines, or you may find it will be declined.
Of course, Obviously the articles will be unique and heavily spun.. It can pass for 100 unique articles, trust me, it's wat i do
sure why not? do me a mail and i will forward some samples to you. email is neyolaguirre[at]gmail[dot]com