I've read a number of threads comparing the Gobi Steal rack and the Baja racks.
A common theme seems seems to be the Gobi's are stronger but I see they both have a maximum weight capacity of 300lbs. Although, Gobi says they have a static weight capacity of 600lbs for tents. Further, there is an optional sunroof insert to give the Gobi another 150lb and 10sq feet capacity.
So, they are effectively the same weight restrictions for what I would use it for.
Given the significant cost differences ($1,400 vs $800), I think the Baja is the play!