STRONG TOURISM OUTLOOK. Just over 34 million domestic tourists visit Tennessee each year. The state's tourism department kicked off two important ventures in 2005: a nationwide ad campaign starring music legends Dolly Parton and Isaac Hayes, and the launch of a new vacation-planning Web site.LIMITED COMPETITION. There's little direct competition for this title. Most other guidebooks don't include color photography or only focus on the major cities. Compass Tennessee 4th edition covers the entire state with lovely full-color pictures and in-the-know text.