SAS or Power BI or Power BI with R?




I work at a bank and as strange as it may sound, we had been using only Excel till now for analytics. Through a lot of push, our senior management has decided to invest in a new analytics tool. I am preparing recommendation and we are considering SAS or Power BI. I am looking for some advice. Which tool would be better for customer analytics and better to learn for my career? Is it SAS package, Power BI or Power BI plus R? R being an open source could be a bit difficult for the bank to approve but I would like some recommendations please.

Thanks in advance.