You’re misquoting me on “touchy” - that comment applied to mounting the camera the right way round on my very large monitor - my comment has nothing to do with the performance of the device.
I used the free open-source AITrack and OpenTrack for several days (see Head Tracking Software here [REFERENCE] Compilation of the best companion apps to use alongside MSFS2020).
Previously I’d been having trouble in the 5th Sedona MSFS flying pattern tutorial looking around while flying as I don’t find it very handy to look around by using either the mouse or the keyboard. I found the free AITrack/OpenTrack software brought a new dimension of both immersion and capability in VFR flying - I could easily click away the co-pilot’s yoke and observe what I was doing to the flap control lever while moving it with the keyboard function keys at the same time using that free head tracking software with my Logitech webcam I’ve had for years for Skype.
Maybe some people are cut out to be jet jockeys and other people will never get away from the barf bag. I haven’t had any problem with either AITrack or TrackIR with any motion problems - perhaps because I’ve spent a significant fraction of my life looking through a dissecting microscope at 25x or 50x magnification for most of the working day where the distances you see and the movements of tools that you hold in your hand are tremendously magnified compared to the real life versions of what you hold in your hand and your associated real life hand movements. I haven’t experimented very much with TrackIR but with the out-of-the-box settings that I tried for version 5.4.2 of the software, as I demonstrated in the YouTube video that I posted above, I was amazed that I could look 180 deg behind myself without looking very far to the left to the left or right using the default settings, I did find the dead zone/reduced sensitivity area in the center not as much as I would like. But I had zero discomfort in looking around.
So one can go with the decent FREE head tracking. Some people say Aruco Paper is better than AITrack. But considering the cost of other peripherals ($250 for a Honeycomb yoke), I don’t think the current price, $135 with discount applied, for just the TrackIR camera and passive TrackClip hat reflector is excessive and it can be used in other games like first-person shooters as well as in flight simulators.
I can appreciate head tracking hardware/software, the same as VR, is not for everyone. But then, too, a corollary must be that that doesn’t mean it’s not for anyone. Some of us love it and find it adds significantly to the MSFS 2020 experience.