I have recently began to consider adding a reflex type sight to my curent production SW Model 41. I have found a number of these types of sights and was hoping to gain some valuable insights from others who have a similar setup on thier pistols. More specifically who makes a quality sight? What sort of cost are assiciated with the particular sight? Do these sights require use of a rail or can they be mounted directly to the slide? Do the sights perform well in both sunny/overcast conditions? Your input is greatly appreciated.