I have both a Burris FF3 and a Vortex Venom. I have hunted with the FF3 for 3 seasons with no problems. I haven't hunted with the Vortex yet, but it appears to be a well made sight and it has good reviews. I bought a new affinity this year and needed a sight for it as well. Like you I was trying to decide between the burris and vortex and I found a good buy on the vortex so I bought it to try out. We'll see how it goes this year. IMO either sight is a quality sight.