I live 90 minutes from there and go every year. Not sure it is worth a drive from Texas though. Heck, in the time it would take you'd better go to OshKosh.
That said, it is a very good show. Here is a link to some fantastic pics from '05 & '06 which were really great years!
http://www.pbase.com/keith1959/thund...michigan__2005 http://www.pbase.com/keith1959/thund..._michigan_2006