I would highly recommend Navionics, they have more lakes in both HD and regular. You can get free updates for a year thru the Freshest data program, and they also have recently introduced Sonar Charts where you can upload info to Navionics and they will update cartography and you can then update you chip. Here is a link to the Navionics website you can preview your state and get a pretty good idea if the lakes are covered http://www.navionics.com/en/ here is the lake list http://www.navionics.com/en/high-definition-lakes
