ACOG is a great sight too.
I love these eotechs; holographic reflex is awesome for picking up moving targets WHILE you're moving, you don't get any parallax unless you have a cheap optic. I also have a Burris FastFire 3, and it has some parallax but gives you a white line to help centre your eye. I won't buy any sights that can't take recoil, and this is why these sights are all much more than $100. Dual purpose, though.
Next purchase...
http://www.tacticalimports.ca/gsci-c...ght-p-260.html (640x480 + all bells and whistles)