The list author says: "If it is on this list it is worth having, but they will appeal to different audiences. They range from merely OK to best in breed. Note: as of 2005, the Python programming language can be used with SPSS."
"This is not a bad mix of theory and SPSS point and click. For all three by this author, make sure to read the Table of Contents carefully and choose the right one for you. (Again I have an earlier version)."