I like that it is easy for me as an end user, but also very powerful if you need more advanced features such has formulas or macros etc.. It's free software so there are no hidden costs! The only thing i would say could be improved was when importing data from other applications (like Access) some of my columns were not imported correctly because they had different formats than what excel uses by default - this can easily solved though with custom settings in your source application which should always use standard formatting instead of trying its best guess at how things look better looking into Microsoft Office itself :) Highly recommended product!! You will love using XlsxWriter once all basic tasks have been completed successfully without any errors/warnings!