We have a 4 hour drive, and have done the the show the last 4 years. It is worth the travel. We put a deposit down on our SOB 5th wheel last year, and picked it up this April after ordering it in February. The show prices are good.
If you are looking for particular models, then go to the show website, check what dealership shows that brand, then contact the dealership to see if they will bring that model to the show. We found the dealers like to sometimes bring only the bigger units.
You may find the perfect unit there that you haven't seen before.