I'm a Lowrance guy, but HB is nice also. I really like the built in Insight, and you can use Navionics and see both mapping programs side by side on the Lowrance. Insight for where the Navionics doesn't show up, and both for seeing contours and structure side by side when they both show up.

The Insigt shows you stuff the new programs don't and its like using a topographical map of the lake bed.