Amazing Videos, really want to understand more on these topics. Can you guide me how Market data is used in pricing , valuation and Risk areas?, if possible can you post few links where i can read these topics, want to start with basics.
I have not used either platform in a while. For US equity trading, I think most platforms have about the same set of features. Maybe look at the fee structure, minimum margin requirements, interest rates, etc. as those might be more important to you.