It depends on your needs. If you are most concerned with alcohol detection, the presence of alcohol versus the precise measurement of %BAC, testing friends and family, or learning how alcohol affects your body, a Elite Series breathalyzer is perfectly appropriate for your needs.
If, however, you are interested in the highest level of accuracy, we recommend spending the extra money on a Professional Series breathalyzer. These breathalyzers offer the same advanced technology used by law enforcement for preliminary screenings. In addition, military, substance abuse centers, clinics and businesses typically purchase these models, although they are often purchased for concerned individuals, too.