Lake chip for a Garmin GPSMAP 62S

[lepomis86]

I just bought a Garmin GPSMAP 62S handheld GPS and I want to order a lake chip for it (it takes microSD cards).  Anybody have suggestions for what type of lake chip is best for this GPS?  Minnesota lakes are a must, but South Dakota would be a plus.  I think Garmin offers a chip with all US inland lakes for under $100, but I'm afraid the depth contours might not be detailed well if it includes that much data.

Any suggestions or help would be appreciated! 

[The General]

By the upper Midwest chip.

[lepomis86]

"By the upper Midwest chip."

Who makes this? 

[The General]

Garmin