The M2 is considered one of the most solid bases for a tactical shotgun. The recoil is more than the other two, but it is a solid and durable shotgun that weighs less than either the VM or the SX3.
The SX3 is a gas gun and has a very fast cycle rate, which makes no difference at all for your pursuits. In the very harsh cold, it can have some function issues due to the geometry of the gas system. It can take 500 to 1000 rounds to get it all ticking properly, but then it is a solid system. It will need the most maintenance of the three.
The Versa-Max, depending on which version, has full adjustability in the stock and replaceable risers. Probably the easiest of the three to fit, and it has the least amount of recoil. The trigger group and operating systems were "borrowed" from the Benelli M4 with the addition of a self cleaning and self regulating gas system.
Having owned and shot all three, I currently use the Versa-Max for both competition and hunting.