It looks like the Jet will best the GNex with a higher performance processor and gorilla glass 2. GNex doesn't have expandable memory, but I don't know if the Jet will either, rumor says no. The battery in the GNex is removable, and the Jet is rumored to not be removable. HTC is supposed to be putting really nice cameras in their One line where the GNex is a good camera, but not elite. There always seem to be plenty of developers for HTC devices, so you can't really give either platform a nod on the custom ROM dept. Then it depends on how much value you put on the design of the handset, Sense and Beats Audio. Either phone is going to be really good. It partially depends on if you want 2 extra months with a new handset.