I think one thing to keep in mind regarding red dots, you get what you pay for. There are some less expensive ones available, but its gonna take a decent one to stand up to the recoil. Burris makes nice red dots. I have a Bushnell red dot on mine but havent put enough rounds through it to say it will stand the test of time, though they boast it will. There are also some very high end red dots.
Depending on how youre using it, like for hunting, maybe a 2x power for rifled slugs would be worth doing. If for turkey, you may not need something like that. I like the red dot without magnification because it allows me to shoot with both eyes open.