This is a very good product. I listened to each cd two or three times depending upon how well I thought I had understood after the second listening. I went to Egypt after studying the first five cds and really enjoyed trying out the language and it was appreciated by the Egyptians. The two extra vocabulary cds go at a much quicker pace and will need several plays before I get to grips with them. There is also a word for "was" which does not seem to be explained before it is used.
I have already ordered the Perfect Arabic because this is so good.