I like my rack. Noise is minimal. I have kept my tent on for the last 6 months. It does not rattle if installed tight. My brother's Gobi' expanded metal flooring rattles. I recommend the baja rack utility rack.
The welded Gobi floor rattles? Not even sure how that would happen. My Gobi is silent, it's possible something on your brother's rack did not get fully tightened on the install.
