Garmin 8000 series units are 40 percent faster than the previous 7000 series, and brighter too. In our Miami Beach test, the units kept right up with us when we scrolled the map back and forth as quickly as we could, using the touch-to-pan function. These advantages are readily visible at the helm. Hidden, however, is the unit's compact depth — just 2 inches — ensuring an easy upgrade to the newer system. Garmin also committed more of the surface area to the display. You can get them in 8-, 12- and 15-inch versions. A new interface system includes a touch menu bar across the bottom, which helps you master the system easily in spite of its upgraded features. The 8500 Glass Helm features all the utility of the 8000, but boasts the sleek all-glass look expected on long-range sport-fishers. A 10 Hz GPS/GLONESS external receiver updates position and heading 10 times per second for smooth, seamless operation (starting at $4,649.99; garmin.com).