When I wrote about the StructureScan 3D announcement last July, I recall feeling a bit skeptical. But I was wrong. On-water demos have taught me that SS3D is much more than a visual gimmick.
Yup, you're going to be able to easily collect soundings as you cruise, if you want, you can watch the resulting high def sonar chart materialize in your wake.
The competition around sonar burns hot on many fronts and the more the merrier, I say.