Design wise they are almost exactly the same. The guiding light is made of "Epic" fabric, while the Bombshelter is made of Todd-Tex fabric. The Todd-Tex is a heavier, more rugged, and more waterproof fabric than Epic. Because of that the storm shelter is heavier (by 3.5 lbs). Part of that weight is also because the Storm Shelter comes with vestibules for both end. They are optional [and cost extra] on the Guiding Light. I hope that helps.