I just got back from a backpacking trip in the North Cascades. The temperature ranged from very warm to getting 3-5 inches of heavy, wet snow, with some typical cascades rain interspersed. This tent performed very well, even with the flat roof which I was concerned about. I did have to get up a couple of times to sweep the snow off my tent. But, that is true with any 3 season tent. I was snug and dry the whole time. And, when the weather was warm, I left the fly off to star gaze.
It seems to be a very strong 3 season tent. We shall see how long that flat roof stays leak free. But, it's good for now..

We received this tent last week. Setup is a bit tricky with all the poles being tensioned together to form one big pole; making setup a two person effort.
The vestibule door is a fair bit lower than the tent door, making entry and exit a bit more challenging than it needs to be.
The biggest design flaw however, is the flat area of the fly at the peak of the tent. We found it impossible to tension the fly enough so that water did not pool in this area.
A very promising design, but Marmot needs to make improvements on the above before we can recommend this tent.

I received the Marmot EOS 2-person tent about three months ago as a gift from my girlfriend. I will say having read the instructions and setting up the tent at home before camping, I had no trouble setting up the tent. In fact it is a very fast setup. My one complaint is that the top does tend to hold a certain amount of water. It is however slanted and rolls off the rain fly as it begins to pool. I spent eight hours in the tent during a heavy storm and stayed dry as can be. The tent is also light and stuffs smaller than the stuff sack.