Best puffy? Grumman, Forclaz MT500, Others

[_MountainBum]

Looking for input on what the best puffy is for backcountry hunts. I’ve run very cold when not moving and coincidentally spend lots of time behind glass. Not a great mix. Have been looking at the SG Grumman with the euro optic deal, but have also been told the cheaper Forclaz MT500 is warmer and more durable.

Would love some input on either of these jackets, or others that perform well.