I have been using thinkorswim for options trading and I am very happy with their support and their trading platform. )I am a beginner. ) thinkorswim bills themselves as the only broker that doesn't accept order flow money. Execution seems to me to be more important than commissions. IB is both a market maker and a broker, and to me this is clearly a conflict of interest. They have more incentive to internally route orders, don't they? They don't need order flow money, they already are on the other side of the order and collect the full pop. What do you think? Is this no big deal?