The TrackIR3 pro with the new Vector thing is amazing, flat-out *amazing*. Once you get used to it, it is so much better than either a keypad or coolie hat that it will blow you away. Some folks take days or weeks to acclimate. I guess I was lucky: it took me only a few hours.
Moving your head just 15-20 degrees can turn your point of view in the game through 180 degrees. It's kinda like mouse acceleration, and you have full control of the scaling. I don't believe that it can work with either snap or padlock in-game views, but then, I never used those before, anyway. I was initially concerned about peering out of the corner of my eye at the monitor (through glasses) while turning the in-game view all the way around to six o'clock, but that has not proved to be a problem for me, at all.
With the Vector, you can move around very realistically in a 3D cockpit. For example, the canopy frames are no longer an issue: if one is in the way, just lean around it!
And no, I do not work for NaturalPoint!
