Theoretically yours should go first, however, if your mm isn't on track with it, whichever mm is backed up to that price first on that day would get priority as screwed up as it is have seen it happen live-im using etrade
ASK
etrade .075this gets hit then Etrade moves back behind the other 2 sbsh .08 12:00 nite .08 12:05 etrade .08 12:10
and it alwys seems to change as the asks move up and down