I would pay attention to the lakes that you primarily fish. For me it is the northern Army Corp reservoirs. Hot maps does have Brookville and Patoka in HD but none of the other AC reservoirs. Hot Maps in HD is not much better than what is loaded on your locator. This is based on my experience with Lakemaster for Wisconsin vs Hot Maps Indiana. The level of detail in Hot Maps does not compare to Lakemaster. That said if you are looking at just Indiana Lakemaster is a poor choice, they don't even list the northern AC reservoirs. My 2c, good look.