Hi, I've a question regarding the merit of market order vs. limit order for the purpose of scalping. Say if you think the market is moving, is it better to submit a limit order or would you actually hit the bid (expecting down move) or lift the offer (expecting up move)? My own experience suggests that if i submit a market order, the market has to move 2 ticks in my favour before I could have a shot at cutting my position. Moreover, exiting a trade can be a problem too because the volume on the other side will be thick as well. On the other hand, if I submit a limit order, I would be able to cut my position after 1 tick vs. 2 ticks for market order. However, the problem is that often times it would move without me. Any thoughts on how to overcome this execution problem?