That's very true. Its hard to pick from all of these. My standby for fun is definately the Vortex for the price and decent durability. My buddy puts his through stress tests all the time just by how abusive he is to his equipment. If you all could only see. Lol.
For a primary work version mostly due to extreme battery life and extreme durability, my fave is definately Aimpoint(of any type, depending on the job). Eotech does ok too, but durabilty and battery lack to its main competitor(Aimpoint). But for look cool factor, it wins hands down. Not that looks should be a factor, but it is for most. The one I've tried but never owned is the 1-4x Elcan Specter DR. If they could give it Aimpoint battery power, it would be my favorite, hands down. Not that battery is a big deal anyways with it, considering it has etched reticals. Nobody who has to carry a rifle for 12 hour shifts wants to carry a magnifier as well as a red dot to be functional in both capacities. You carry enough wearing your gear, ammo and plates. Extra stuff just sucks. Who needs a P90X video when you carry all that and work in the blistering heat? Am I right or what? Lol! Some of you know what I'm talking about too. What I wouldn't give to take my vest off at work sometimes. But if you do, could be the last time. The old "Catch 22".