I'm a proponent of red dot optics, on handguns and carbines. As long as they are of good quality. I am not a fan of the many chicom multi color, multi reticle offerings.
I've had a few on my Buckmark like I mentioned, but I like the current Bushnell the best.....so far.
AT3 Tactical.
Burris Fast Fire II.
I run an Aim Point T1 on a LaRure QD mount on my DDM4 Carbine. I had an Aim Point PRO for a while but sold it.
And a Ultra Dot on my Ruger SRH .44 Magnum