I had a chance to use the new Navionics+ Regional Chart for the West and it is amazing. It is very simple to use because it is plug and play and it has the following details:
· Marine and lake charts
· One foot contours
· AZ, CA, CO, ID, MT, ND, NV, OR, SD, UT, WA and WY all in one
· 2,600 lakes and growing
Get both saltwater and freshwater charts throughout the entire region. Includes full marine coverage and Canadian waters of Puget Sound plus more than 2,600 lakes in AZ, CA, CO, ID, MT, ND, NV, OR, SD, UT, WA and WY. Nautical Chart and SonarChart™ 1 ft HD bathymetry map are preloaded. Community Edits can be downloaded along with daily updates for one year! Simply plug your card into your PC/Mac to get the most updated charts from navionics.com. 16GB card and USB reader included.