I really want, for my first HD shotgun, a reliable solid sturdy tac light attached to the forend. Mossberg 590A1 (the gun I've decided on) has a "Light Forend" model which comes with a factory Insight tac light built into the forend. I'm not positive how many lumens it puts out , although it might be 120. Does anyone out there have experience with the Insight ? Should I just get the stock (no light) 590A1 and go aftermarket (Surefire ?) instead ? Thanx in advance for any opinions and advice !