Track ir 5

[Jones]

Yes, TrackIR 5 has a greater resolution than TrackIR 4 if I recall. However, you should be able to adjust the tracking curves in the TrackIR software to make things smoother where you need it (usually at the aiming point). It takes a bit of time to get used to.

In my opinion you need the 6 degrees of freedom. It's a standard now with all major sims using it. With 6DOF you really should also have the Track Clip as the three dots make positioning the sensor difficult to get good head tracking.