Freetrack is working flawlessly when you make good cap model.
I didn't tried TrackIR but was looking at tracks with it and I don't see any difference, maybe because my cam can run 640 resolution.
Best camera is PS3 eye but you have to make model with leds.
A4Tech PK-333MB is working with reflective material.
Freetrack even have one advantage over TrackIR, lets say you are in important mission like SoWc and your TrackIR freezes (that happens ) you are out.
With FT you just restart program and you are back in battle.
http://naturalpointofview.blogspot.c...criticism.html