I had a Mountain Hardwear Goretex PRO shell that was lost in a fire. Since MH had discontinued the particular shell, which I loved, I got the Koven based on the old Outside mag review and great BC price.
The MH won my loyalty by being reliably dry and windproof on summer and winter hikes, snow shoeing and skiing on and off piste. The Koven brings more to the game. I actually like being caught in the rain, it is amazing to just watch torrents bead up and drain off while inside it am warm and dry. It is impervious to downpours.
The really amazing thing is the nanotechnology involved in the fabric. It vents amazingly well. If you control your layers correctly, there is no need to use the pit zips. The magic fabric gives the coat a broad temperature range that really surprised me.
I pay attention to the layers that work so I can approximate how to dress before a hike, bike ride or day of skiing. Inevitably conditions change and I get it slightly wrong. But, with this coat it actually seems to get a little warmer or cooler depending on the your body's temperature. If you are engaged in something aerobic and start off cool, you'll get warmer, but not uncomfortable. Similarly, if you are going at a good pace and the sun starts to set and temperatures fall, the coat just makes you feel warmer. Honest, it seems to me that I only feel the temperature change in body parts that are exposed or covered by other garments.
It is a great pleasure to have a broader comfort range. As my first time skiing in it approached, I am hoping that it will prove to be the answer to the in-bounds skiers' dilemma, do I dress to be warm on the lift and be over heated at the bottom of the run, or to be comfortable downhill and cold going up?