I bought an Atuk Kanguk last year. Here's a pic.
If I had been thinking properly, I would have saved the extra thousand for the Snowtrekker. Can't beat the ease of set-up. The Kanguk has the stove pipe up the centre by the centre post. This takes up a lot of usable room, plus makes it kind of risky coming into the tent if you've had one bud light too many. If you are going to spend a lot of time in the tent, a self supporting structure like the Snowtrekker gives you a lot more liveable space. Learning to get a good set up with the Kanguk is tough too.
On the plus side, it's half the price, very durable and light. It rained on me like cats and dogs out moose hunting last weekend, and the Kanguk didn't leak. Also, it sheds wind very well, as we had gusts of 30 to 50 k blowing straight in at the tent, and it barely moved. The kanguk also heats up very quickly, it can become a furnace if you don't control the damper carefully.
However, if i were to do it again, the snowtrekker would get my vote.