Maximumpower's method is the best method to hear the difference between each emulation. It can be done as follows:
1: Load an audio track with loop added (for example a drum loop).
2: Clone the track so that you have two identical tracks routed to the same output bus (eg master).
3: Enable the console emulation on only one of the tracks.
4: Invert the phase of only one of the tracks. (this is done in the console view)
5: Now you can toggle between the different emulations on the track which it has been enabled and hear exactly what each sounds like. (at this point also alter the trim and drive dials).
To me, it sounds that the N type is adding more presence to the top end. I set the trim to 0db and drive to +3db then toggled between each emulation.