IMO for most of the laser mouse, regardless of whatever mousing surface
tracking issue isn't noticeable unless you're a very high sensitivity user
like me, utilizing 4200dpi, I can notice if the mouse movement is "jumpty"
or "lost track" for just a very short moment

I like the "blue-ray" very much
but doubt if the tech does help to the tracking
Never thought anything than laser engine used can manage that

Mind to let us know how you judge the tracking performance in your review?
Testbed, settings and any relevant info

One more, is bluetrack a technology used as enhancement to the laser sensor
or a totally new independent laser sensor?

If it's the second, does it mean:
Razer - infrared laser sensor
MS - bluetrack laser sensor
Logitech/SS - conventional laser sensor