In the discussion on which is the best choice of pizza stone vs steel, the decision is yours. It would ultimately depend on your set budget, a way of cooking and what is most comfortable for you to use.
If you are a beginner and just starting your pizza-making journey, a pizza stone would be a good start. However, if you want to have a more challenging tool, then baking steel would be the way to go.
Both surfaces can offer you a very crispy and tasty crust as well as the pizza as a whole. So, whichever you end up choosing, you will still be able to get good results.
Also, there are instances wherein these two can be used together. As individual tools, both give good results; but as one unit, it’ll give you a better one.