8 Real Sat's have the same tests as Red 10 Real SAT's

<p>I noticed that 8 Real Sat's has two of the same tests that are in the Red 2003 10 Real Sat's. Is there any point in buying the WHITE 10 Real Sat's (I think it is the second edition)? Are there any tests AT ALL in that edition that is not in the other two? I'm asking because it was published in between the two others, so it doesn't make sense that there would be unique tests in that edition. Please enlighten me.
Ryan</p>