I have both the Hidden Wolf (HW) and KOM bombers and love them both. The KOM is warmer (almost too warm) and a lot bulkier, I rarely use it unless the temperature below zero. I anchor with my thumb behind my jaw bone, at the base of my ear, so the bulky KOM flaps affect my anchor. Like others mentioned it is more comfortable to pin the flaps behind the neck but with my anchor it is still in the way. The HW is thin enough that I am able to snap the flaps closed in the front and still achieve a good anchor. The KOM is wind proof and the HW has wind stopper, so breaking the wind with either one is not a problem. With the HW I wear a light weight balaclava under and a heavy wool watchman cap on top, when need. With the KOM only the balaclava is needed. In addition, the use of a neck gaiter makes a huge difference in maintaining one’s body heat, my favorite is either a silk scarf or the Kuiu merino wool gaiter. I forgot, this year I used the Kuiu wool beanie under the HW, without the watchman’s cap, and it worked really well, but the temperatures only got to negative digits a couple of times. Most likely, the watchman’s cap would have been needed if the temperature had dropped much lower.
Have you ever noticed how many layers of hats Mike Mitten wears while hunting? If you think about it, there is probably good reason for it, the layering allows one to regulate the heat better.
My final thoughts: They are both great products and you won’t go wrong with either one.