I have a Lowrance LMS-332C and would like to load a topo map of the Santee Lakes into it. Does anyone have any advice they can give me on which one to use? I've seen posts on several (Navionics, MapCreate, etc.), but can't get enough detail to make a choice. The more detail it shows, the better. I have the PC setup to customize and load to the MMC/SD postage stamp size memory card.