I ran a Gobi for a few years...it was a great, solid rack that still allowed me to drop the top--which was a must, and it was a no drill install. They are costly, but it was well worth it.
I ended up pulling it and selling it when I started doing much longer, more routine highway driving for work (Shreveport to Florida, Shreveport to San Antonio, etc) and went with a trailer setup. Now, I do much prefer the trailer setup...but there is that bit of "Look, open space, what do I buy to fill it?" cluttering up the trailer/camp site. I'm usually a bit of a minimalist. The big positive for the trailer, only attached when you needed it, everything can stay packed/ready to roll, and base camp and still use jeep for daytrip/wheeling around camp.