RE: scopes vs red dot vs open sights
Like Maytom I went with a scope not only to gather light but to be more accurate.
I found the fiber optic sights blocked my target when aiming down the barrel and I didn't want to worry about turning on a red dot or forgetting to turn it off and having a dead battery and no sight. I have a Bushnell turkey scope on my Mossberg and will never look to change. It's a great combo.