I love EOTechs and have had them on every patrol rifle I've owned. I prefer the D1 (single red dot) reticle but I currently have the A65 (red dot with 65 MOA ring) on my rifle. I'm accurate with the EOTech out to 150 yards. If I need to shoot further I just add my Primary Arms 6x magnifier. Love that setup.
I have borrowed a friend's Leupold Firedot 1.5-4x and was accurate and enjoyed shooting through it. I also love a good Trijicon ACOG 3x as well.
I can confidently recommend any of the above I mentioned. It's just how much you want to spend. Here are my prices on the recommended optics:
EOTech 512.A65 $419
Leupold Firedot $479
Trijicon ACOG $949
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