Probably the vast majority of Texans have never been to either place.
They go to Colorado, go sking, go to Florida, or go to the mall but many of them don't even know that Big Bend exists and can't find it on a map. I am always shocked when people who have lived here their entire lives ask me where Big Bend is. I have been to both parks and think BBNP is better in many ways but GUMO can be combined with a stop in Balmorhea and has McKittrick Canyon and the Pratt Lodge..So they are both the best.. TWWG
I've got mixed feelings on this. On one hand, I feel ALL Texans should experience the austere beauty of the Trans-Pecos region and all the wonderful parks out here. On the other hand, the region probably can't sustain much more traffic and tourism than currently exists.