Lakemaster chips

What is the best chip to use for my humminbird for northern minnesota lakes? For example, leech lake, mille lacs, deer lake?

There’s 1 chip for nearly all Minnesota lakes. Here’s the lake list: http://store.lakemap.com/media/document/MN_v4_2013.pdf All the lakes you mentioned are on this chip! Just make sure if you buy a chip to know what version you are getting. Ver 4 is the current version. I think ver 3 (out dated now, but maybe cheaper if you can find one!) still has the lakes you want in HD, but you would want to check to be sure.