Hi Fred,
Thanx for stopping by...
All my orders are limit orders, but I always put my limit orders a couple of cents above or below the bid or ask, depending if I am buying or selling. This way, my orders, though theoretically they are still "limit" orders, but in actuality, get executed as market orders. This way, I am not at the mercy of the MMS in the order execution of a "market" order.
contax