Originally Posted by skullcrusher
It really comes down to what makes the user more comfortable at aquiring the sight. Many people like the red dot because it is easy to gain a sight picture quickly. Now, it is my own opinion that if a red dot is used, the user needs to be very familiar with the sight. Turning it on to level 10 in low light will not help, and fumbling with the sight dial can take up valuable seconds.
+1000 on all points, especially the last one. I put the Millet red-dot back on my GF's, and it is a great piece for the money, but if I were serious about going the optic route (I only put it on there to try out), I would go with nothing less than one of the Aimpoints that can go years on a battery, and would simply leave it on and change the battery at regular intervals (every 6 months, every year, etc). That way the sight is ready when you are, not to mention it is going to be durable enough for all but the most rough handling.