IMO, among the "red dot" type options, the most pros and the least cons are with the Burris Speedbead and Fastfire III (or similar, but more costly options). Battery life, if left on continuously, is at least 6 months.
I've been using a Burris Fastfire on my 20 ga dedicated turkey gun for a few years now, and really like it. With this particular application, the big appeal was the tiny footprint and near zero weight of the Fastfire sight (compared to other optical sights).
That said, I generally prefer a more traditional low magnification "scope" for a dedicated turkey gun. The exception is when going all out to reduce carrying weight and streamline the weapon, thus the Burris Fastfire/Speedbead for those applications. Where weight & size are issues, I see only liabilities with the more traditional large "red dot" style sights (akin to an orange sitting on your receiver).
You can get a comparably wide field of view (to a red dot) with a traditional scope having only 1x or 1.5x magnification. Traditional scopes generally provide a much clearer view of the target. Leupold makes a 1x magnification scope that works great. My turkey-gun favorite is a Nikon Monarch 1.5-4.5 with a 20mm objective (very small, very light, very clear optics). On a turkey gun, you never need an objective any larger than 20mm, but good luck in finding that today.