The features that I have found most valuable are the Bayesian statistics and descriptive statistics.
IBM SPSS Statistics provides advanced statistical analysis with custom tables and macros, using machine learning for data analysis. It's efficient with large datasets but can slow down older systems. Users appreciate its visualization tools, although charts need improvement. Its documentation is lacking, making it challenging for beginners. It supports regression, segmentation, and ANOVA analysis. However, enhancements in data visualization and quicker technical support are needed for a better experience.