Sorry this post is a few weeks late. I have no experience with the NEMO Gogo Elite or the TT Contrail, but I do know that NEMO makes a quality product, as I have owned 2 of their tents in the past. However, for more space and greater flexibility for setup, I prefer an ultralight tarp and bivy.
Here is my sleep system. It weighs 3 pounds. Hope this provides you with other options.
TAR ProLite Small, 11 oz.
MontBell UL SS Down Hugger 5, 16 oz.
MLD Superlight, 5 oz.
GG SpinnTwinn Tarp, 8 oz.
Trekking Poles (2)
GG LT4, 8 oz.