Until the Tobii is more accurate and precise there's no point in getting it.

I hope Tobii continues to work with various gaming vendors as this really enhances play

I highly recommend the Tobii, it's eliminated the neck strain I'd experience after a 10 hour session wearing the TrackIR, improved my accuracy with fixed weapons, and allowed me to call up targets with just a glance

Tobii also provides for other functions, like controllering your gun and fangs for hire by simply looking with your eyes at where you want them to go and they will follow suit

Before I used TrackIR5, I think I like Tobii 4c more.