Best red dot i've purchased - Aimpoint CompM4 Red Dot Sight (No Mount)

I have a Vortex,Leupold,and a Eotech and by far this is the best one in my opinion.Excellent product.Crisp red dot with crystal clear glass. Before I purchased, I used the one my friend had and fell in love otherwise I wouldn't have spent this much money on another red dot. Very accurate and keeps zero no matter how much I've bumped my optic.Set it and forget it. Super bright red dot. No issues on my Ar15
Or my Socom 16 CQB