First let's talk about umph: 150 lumens is 30 more than the highest SureFire has to offer at the moment in the LED department (with 120 on the E2D LED). Believe it or not, 30 is a very noticeable difference.
The only thing I did not like about the Inforce was the lense is plastic vs. glass.
Could you please tell me what battery this unit takes. I tried finding it on tacticalleds.com and couldn't see the info.