Guys, I need some help! I trade short-term oil options(OIH) and everytime I do autorouting I seem to have the bid moved under me as soon as my order is entered. I end up having to keep moving up my bid just to get filled and of course as soon as my order is filled the ask drops 10-15 cents. I have been thinking of routing to specific exchanges so I dont have to deal with these scumbags. Can someone give recommendations on which are the best exchanges for OIH? Thanks, Raza