Quechua 2 Second Easy tent Vs gazelle t3x

I have a gazelle T4 and a major selling point for me was being able to stand up in it. And with the taller walls, it just felt a lot more spacious and a Sierra Designs tent I had before, which was also roomy but not as tall.
 
I've been looking at the Quechua 2 Second Easy 3 person tent as a backup to a T4 clone (Qomotop), although our current tent has been amazing, it only fits on the roof of the rig. Looking for a smaller package that can fit in a storage box or inside the rig.