i have the gogo ex; its a really great little tent. i didn't care about weight too much and it packs up as small as pretty much everything else. the one i have is a mesh fabric with a rain fly; so it's a little heavier and bigger than the standard gogo; it is a little more prone to condensation than a tent, but not as bad as a bivy. i can even change clothes in it or read which is a nice feature. the weight listed seems pretty accurate. there are some extra pieces and the compression sack that nemo gives with the gogo is too much, so i just put it in a sil-nylon sack. i might go with something lighter, but after using the gogo it would be really hard to go with less headroom (for me).
I did not like this tent; I found that I could not sit up on my elbows in it, and I had a very hard time pitching it acceptably during rainstorms. I'm swapping to a single wall for convenience. Condensation was an issue although not horrible. Didn't use it in winter.
