Quote from def:
You clearly haven't done your homework when it comes to IB routing and your ignorance shows. If you are going to make such a comment, back it up with facts. IB's SMART routing is designed to provide the best fill. If you want to read a little bit about the firms view on the topic, you may want to read this: ttp://www.interactivebrokers.com/en/p.php?f=news&p1=news&ib_entity=ibg . Nevertheless, if you don't like the SMART routing, you can route directly to the exchange of your choice.
In addition, how about you go to the source, type your broker's name in google along with 606 and see where their orders are really routed.