"MSR XGK EX stove"
I've had quite a few MSR stoves like this. The old model G, old model GK, old model XGK, and lastly the model XGK-II. I have not yet owned any XGK-EX. This adds up to about eight or so stoves.
First of all, most of these white gas stoves that we're talking about are so-called plate roarer stoves. They tend to be high in efficiency, high in heat, a little noisy due to the plate during operation, and a little complex in construction. A different type would be a Simmerlite (no plate). It helps if you have high mechanical aptitude.
For many of us, white gasoline is the best fuel for winter use. Kerosene can be hotter in efficiency, but it doesn't vaporize quite the same way.
When I am doing anything in severe winter conditions, I will take my XGK-II. I would take the XGK-EX if I had one, but that will be the next stove. The -EX is not cheap. With these stoves, you really want to play with it for a while and learn its habits. Once you've used it for several days in a row, you will know exactly how much fuel to use in priming. I once got so practiced that I could prime it with about five drops of fuel. I recommend placing the stove and fuel tank on a piece of Masonite about 10 inches square. That keeps it insulated from snow, and it gives it a stable base.
If I am going in less severe winter conditions, like spring snow, then I will take a Simmerlite since it is lighter in weight. Once I get consistently above freezing, then I will take some butane canister stove running butane blend. Once it gets nicer than that, I will take Esbit for boiling, or possibly alcohol.