My TWS is set up to default to limit orders. So even when I'm taking the bid price on a sell (or ask price on a buy), my order goes through as a limit order. Unless you're talking big size, my experience is that the order will be instantaneous if the order is taken by TMBR or an ECN. NYSE orders can take a bit longer, but as I indicated previously, most SMART orders are executed rapidly.
So I prefer SMART routing unless I have a specific reason for driving the order directly to NYSE. Again, I'm talking small size, round lots like 100 to 1000 shares.
So I prefer SMART routing unless I have a specific reason for driving the order directly to NYSE. Again, I'm talking small size, round lots like 100 to 1000 shares.