With respect to ET sponsors, I have used PFG for years, along with QuoteTracker and IB for data. I scalp, so I have no idea what kind of platform you would need if you do not scalp. Their DOM is adequate, their RT commission is $4.10 and their trading desk is fast. Perhaps I am ignorant about other choices, because I am content with what I have now, but I have tried multiple platforms and brokers over time, only to return to IB for data and PFG for trading. With all of my analytical quirks, I like to boil trading down to simplicity. It works for me. I now trade on a laptop.
Note: Do not trade through IB, their customer service to newbies is horrendous!
Note: Do not trade through IB, their customer service to newbies is horrendous!