I have never had the chance to compare the burris and trijicon head to head, but have looked through Burris glass at gun shows and sporting goods stores.
I find the subjective perception of visual quality very difficult to measure. Pics on the web are helpful but brightness and contrast are not always what the eye sees. I know that my glass is better than some of the pics I have seen, every trijicon I have ever seen has been.
I also know that reticle brightness is not the be all end all for optics.
field of view, clarity (edge to edge), eye relief, parallax, light transmission, all combine to produce a superior aiming optic.
Ranging with an AR is almost meaningless out to 200 yards (+1.5" at 100 yards, flat at 200)
Rob said
. . . but am interested in the cross hair for hitting 10" steel at 200-300 yards.
To hit 10" steel at 200, your 50 yard zero will be spot on so no holdover necessary.
At 300, you will have 8.1" of drop (with 75 grain TAP) so just aim at the top of the target and you'll nail it all day long.
No need for elaborate ranging systems to meet his requirements of nailing targets at known distances.
The .9 MOA dot will be very fast and effective.
Beyond that, I have called and spoke to a rep at Trijicon to get them to send me the specs on the german 4 reticle that could possibly assist in ranging. Still waiting on that detail to come in email . . .
Have you read this thread?
http://www.ar15.com/forums/topic.html?b=3&f=18&t=470673