How are fills when you place a market order on a futures contract with IB? Are you better off placing a marketable limit order? As I recall, it says in the agreement that they can trade against your order, but do they in a consistent and noticeable manner? I love IB, but not enough to donate a tick per trade to the cause. A related question: if you place a marketable limit order far away from the market, is that an invitation for a horrendous fill, or will you get the best price available? It has been a while since I have actively traded, and it was with a different broker. At that time, if you did either of the above, you were asking to get bent over.