Best software upgrade (Navionics, etc) for Lowrance HDS 7 Gen 2

[titanxt]

I am looking to upgrade the map features of my HDS 7 Gen 2. I see there are a few different companies making software and was wondering is there was a "best" out there. I live in Indiana if that makes a difference between the brands.

Thank you!

Andy

["G"]

Check with cevans on the Indiana board https://www.crappie.com/crappie/indiana/