I have used all three of these stock brokers and I still use Robinhood.
If you want to get good at something, spend time with an expert!
Madaz is an expert stock trader, sometimes he makes over $50K in a day. He does a lot of shorting. He does not do futures. I joined his room and watched him trade for a while.
Click below to get a 20% Discount to Madaz Chat Trading Room