[JRTJH]

I believe you'll find the Hideout is wood frame construction with aluminum siding while the Passport and Bullet are aluminum frame construction with FILON (fiberglass) siding. I believe both the Bullet and the Passport have a "sandwich floor" (luan/Styrofoam/luan) while the Hideout has a 5/8" solid floor.

You can download the brochures for all three at the Keystone website. Go to the "features/highlights/options" section and you can see quite a bit of difference in the three brands. You'll need to make a list and check them off as you compare the differences.