). SOS mode is pretty worthless, but hey, who knows Morse code these days?? 
The flashlight has a memory so it returns you to the last setting without having to cycle through the modes, and the tail cap is easy to click. The size is very similar to a AA Mag-Light.
The beam pattern is extremely well defined with no halo like some of the cheaper lights. This is apparently due to a specially designed reflector. Color also is not too blue and is more natural.
Here is a review on the T20 Q5 model http://www.light-reviews.com/olight_t20/review.html, and you can compare models here http://www.light-reviews.com/compare.html
The Olight website is here http://www.olightworld.com/proi/cn/prod ... ductid=431
Bought it from here http://www.batteryjunction.com/speciale ... t-t20.html , and added the charger and 4 Li-Ion batteries http://www.batteryjunction.com/4parc390reli.html. With shipping, just under $100.
Can't wait to replace my older P6 clone with this one.