In thinkorswim order window you can choose either BEST or any of the available exchanges you can see in drop down menu Wondering is there any benefit or choosing lets say BATS exchange instead default which is BEST ? I believe with IBKR if you choose an exchange ..depending on exchange ..you can earn rebate for adding liquidity but what about Schwab if we choose an exchange of our choice to route orders to? What are cons pros of choosing a particular exchange in thinkorswim?