Humminbird's 787c2 SI has a standard WAAS internal GPS, comes with Dual Beam Plus or optional QuadraBeam Plus and utilizes UniMap cartography. All the expansion modules for the 797c2 SI are adaptable to the 787c2 SI as well. It retails for $649.
Not to be left behind is the flagship 900 series, (997c SI, 967c 3D, 957c and 917c), which has had microprocessor upgrades, further-tweaked side-imaging sonar and a larger display (8-inch diagonal, wide format). You can also order all the various units as NVB models with preloaded Navionics Gold along with the UniMaps. They can be in-dash or gimbal- mounted. Prices are: 917c/NVD: $999/$1199; 957c/NVD: $1299/$1499; 967-3D: $1649; and the 997d/NVB: $1999/$2199. Humminbird, 800-633-1468; www.humminbird.com.