Audio tour, PDA, mobile phone, iPod, iPhone, or a proprietary device? At SFMOMA, we've been exploring with all of these formats over the years, and evaluating visitor response to get a sense of their preferences. For the exhibition "Matthew Barney; Drawing Restraint," the same content was delivered over three devices - via podcast downloaded pre-visit, traditional audiotours available in the Museum's atrium, or via mobile phone in the galleries. Evaluation offered insights into the unique attributes of each platform and visitor use patterns. These trials, the lessons learned, and the museum's latest initiatives in tour technology are discussed.