http://www.elitetrader.com/vb/showthread.php?s=&threadid=102510 If you have any thoughts about smart routing and would like to post them I would appreciate hearing from you. Am trying to learn about smart routing, the various options that are out there, costs, and opinions of professional traders about how they have found various algos out there. Please post to the thread in prop trading if you have some comments to contribute. Thx.