I used a Tarptent Contrail on my AT 1/2 hike and bought a Six Moons Wild Oasis for my Colorado Trail Thru hike starting in July. In a three day rain storm testing it on the AT in NY, the condensation was so bad my down sleeping bag got soaked. Hence, back to the Contrail. I just can't see taking the chance of getting soaked in a 35 d rainstorm in the mountains of Colorado. But the good news I will probably use it on any of my East Coast hikes going forward. It is all about tradeoffs....