Cabelas has the Garmin 62s for $199. It’s well regarded, and you can get 1 chip that has all the info you’ll likely need. It’s discontinued, but a great deal IMO.
The Garmin Upper Midwest Fishing Guide is on sale on Amazon for $75. It states that it: Features detailed coverage of the most popular lakes in North Dakota South Dakota Minnesota Wisconsin Michigan Illinois Iowa and Lake of the Woods/Rainy Lake. From my understanding this is all the last available Lakemaster data, pre-Humminbird takeover.
I’ve heard the Upper Midwest chip is discontinued, so you might want to make sure you get the chip before the GPS.