Garmin and TomTom are reputable companies that sell multiple types of GPS devices for consumers. The models available through each company will vary, so you need to be sure to check out all of your options before making a decision about which company to buy from. Garmin was founded in 1989, and TomTom was founded just a few years later in 1991. Both companies have years of experience and can likely provide you with a product that can satisfy your navigational needs.
Search through the websites of both Garmin and TomTom to get an idea of each company's selection (see Resources). Both offer a variety of different GPS models to choose from.
Visit your local electronics stores to look at the models you're interested in. Many electronics stores set up displays of GPS devices for consumers to look at. You can even touch the screens to get an idea of how user-friendly each model is.
Keep price in mind. GPS devices can cost under $100 or they can cost several hundreds of dollars. Both Garmin and TomTom offer models in all price ranges. If you have a budget, be sure to stick with it. Compare models of both companies that are in the same price range.
Look for features that are important to you. The Garmin and TomTom models you're comparing may have different features. Keep in mind that you may pay extra for features like spoken street names. Other common GPS features offered by both Garmin and TomTom include a larger screen size, real-time traffic, a detour feature, dashboard and window mounting, and foreign language options.
Check to see if map updates are available for the models you're comparing. Garmin and TomTom models can each have the ability to download new maps to keep them up to date.