[JKTrevecca]

I currently own the humminbird 597ci HD DI. Both units have sonar, gps, and down imaging. I don't own a map card and want/need one for when I'm fishing for hybrids in open water. The contour lines are valuable. Bass Pro is offering the Lowrance with a lake insight card included for $299 right now. A navionics card would run me about 150-170 so I'm considering buying the Lowrance, selling the 597, and getting a map card as close to free as possible. But... i'd like to hear from any of you that have real world experience on the Lowrance if you're willing to share/offer info. Would I miss any of the features on my humminbird?

Thanks in advance!