Ive seen OEC in action. Even though it was a few months ago, i doubt that it's that accurate, assuming you didn't get any disconnects throughout the day.... I also know for sure that transact data is filtered, since my own broker told me. I haven't checked zenfire in a long time.... but i heard that it doesnt seem like its even capable for 64 bit functionality, while TT is.... Its funny how it went from being the best data feed to the worst so quickly..