Power BI and TIBCO Spotfire are both business analytics tools, but Power BI has some advantages: it offers a cloud-ready service with 10GB of free cloud storage per user and integrates well with Microsoft applications. It provides custom visuals, clear dashboards, and natural language processing. Power BI also has a large user community and regular weekly updates. However, Spotfire provides robust server deployment options and strong data transformation and advanced analytics capabilities using R. Overall, Power BI appears more full-featured and easier to use and learn, while Spotfire may be better for some complex analytics needs.