I like the contrail a good deal too, have no experience with the Virga. The only caveats I have on the contrail (there's no perfect gear item):
- has a relatively large footprint for a solo tent. The upside of that is that you have a lot of room inside for all your gear. The downside is it takes a little more room to pitch. If that's ever a factor for you, FYI.
- Depending on how tall you are, I find that I can only sit upright if I first scoot my butt all the way to the entrance, then scoot back in order to lay down. Not a huge factor, but not optimal either for, say, changing clothes.
This becomes a particular factor when there's condensation inside the tent body, which of course is sometimes common on single-walled tents.
Despite the above, I like this tent a lot.