In my opinion, all 3 above tools that you have chosen are top BI Tools used in the industry.
So it's quite different to choose one of them.
To list out a few points -
1. Power BI is a powerful tool for data analytics than others.
2. Tableau is the best at providing data visualization charts and maps.(simple Tool to learn and use compared to others)
3. QlikView is good at providing Data Insights than others.
You can read this blog for differences between tableau, power BI and Qlikview.
Or check out this video