Actually, having gone to both last year, I'd take Moparfest over the Mopar Nationals in Columbus! There are some really big shows back East, but in the Pacific Northwest where I live the BIG Mopar shows are really cookin' when they break 300 cars - Northwest Mopar Nationals at Woodburn Dragstrip in Oregon, Sunbust just outside Tacoma WA. We've lost some great Mopar shows in the last 5 years. One of my favorites is always Mopar Madness in BC!