Never tried the gorilla brand . But I have to agree with RayW. The nashua brand is out standing stuff. I ran across it a long time ago in the navy. It is the only duct tape that I found that if sealed the edges carefully with a bubble of air inside. With about 6 inches of tape you could form a bubble about 2 x 3 x about 1/2 inch thick. If left around an hour to really let the glue set. I could put my heel on it and balance my entire weight on it without popping the bubble. And believe me I'm not a featherweight.
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When in danger or in doubt
run in circles scream and shout
RAH

And always remember TANSTAAFL