If your budget can stand it, I'm a big fan of the EOTech's. I've never had a problem with one and they are built to take a lot of abuse. But then, I'm also a bolt action man first, and really like Nightforce--Mike Ezell
O have always liked the display on them. I have nothing special, I picked up an A2 M4 Bushmaster with a 16.5 in. barrel. Close range is the word. Recently donated some PVC target holders to the local range to try to set up some Tactical practice.
Thanks for the info on EO
What do you plan on using it on and for? On a handgun, weight is a big factor. Tube-types work better outdoors in daylight. Why not visit some of the web sites of the larger, national vendors where they post customer reviews?