Looking at Burris and Vortex information and they both have the auto setting for brightness so that issue not a deciding one. They both have a forever warranty also.
Burris claims weather resistant. Vortex water proof, (I've never had an issue with Burris even in a downpour).
The multicoating on the lens on Burris is between two pieces of glass. Vortex is on the lens surface. That could be an issue.
Burris operating temp. is -10 to 130...Vortex 22 to 122. For turkey hunters that should be a non issue except if you're out west early, that 22 degrees on the Vortex might be on the edge of it's capability.
Vortex has ten brightness settings in manual mode and an auto setting. Burris has 3 manual and an auto. I normally use the auto only on my Burris. I question the value of 10 settings.
Weight, .9 oz. for Burris, 1.1 oz. for Vortex. No real difference there.
Both have top load battery. That's an important feature since you don't need to take the sight off of the firearm to replace battery.
Pricewise. The Burris lists for $299. It sells for around $236. The Vortex lists for $329 and sells for around $229, so no significant difference there.
So, there's the comparison. Both great sights. I don't think you'd go wrong with either.