I had an issue with IB yesterday. I entered an option spread order using the smart route. The NBBO going in was .48/.51. I bid .49 for 10 spreads. Their system then reflected a market of .49/.51. 30 minutes later I received a report when the underlying moved, and was charged for taking liquidity. Their explanation was that the system hold my order until it is marketable. I thought my orders were standing on the COB at one of the option exchanges. They told me I was getting bar none the BEST executions available. I said I was missing out trading with other market makers and other customers because my order was not represented at the exchange. The first representative I spoke to told me I could not direct complex orders to an exchange like the ISE. So I figured out how to do it on my own. Directed an order to the ISE, got an execution. Was charged $1.00/contract and was not given credit for adding liquidity. How is this the best, when Timberhill holds my order until they want to do one or both legs, then crosses the trade on an exchange where they enter their side first, receive payment for adding liquidity and charge me for taking, when my order was in the system first. When I asked the representative why my orders were not going to the COB, and wanted details of where it was held and who was on the other side of my trade, he repeated over and over I received the best execution available using smart route. I don't know why traders here like them so much. Between the nasty representative and COB order tickets that are tagged incorrectly debits when they are credit spreads and the COB ticket having to be rebuilt when I scale into a spread, I think they are no where's close to the best.