Thanks. I would think that there would more interest in this thread as I noticed that this thread was on the first page in google only couple of hours after my posting. But then that's probably not relevant.
If you have spent any time looking at PLR then a quick google search will show whatever (unspun) articles you buy are being used already. Google tends to ignore duplicated content so you are better off producing your own but like crystite says use information that you have for inspiration and improve upon it.
The thing is that it takes a lot of lot of time to produce a lot of quality content. So the question is how to produce it quickly. Or I could buy - but that might be quite expensive.
Use an article writing service such as need-an-article.com for paid articles otherwise you will need to do the legwork and writing yourself.
Have a look at Elance or Odesk - You can get content written for a reasonable cost. That way the content should be unique to you.