I have not used Garmin.
The Garmin web site show
•9" High-contrast color display with keypad control with preloaded U.S. BlueChart® g2 maps
•Built-in DownVü and SideVü scanning sonar with the clearest images on the water¹
•Built-in 500 W (RMS) HD-ID™ sonar (4,000 W peak-to-peak)
•5 Hz Internal GPS updates position and heading 5 times per second
From everything I have read.. Most of the guys love them.
I think alot of it is personal preferance..Like Ford / Chevy / GMC..etc
The GPS update on Lowrance is 10 HZ..(updates faster)
Not sure what ther refresh rate is on HB.
Also the preloaded maps
U.S. BlueChart.. I think these are coastal waters.
What you would need to purchases is LakeVü™ HD, LakeVü HD Ultra
The other thing to think about is expansion.
Lots of guys have a unit on the bow and one on the Con.
You then want to be able to link them together to share data.
So if you start with Garmin / Lowrance / HB . The 2nd unit will have to be compatable to do so.
I know this unit is not out yet
When it is.. Go to one of the retailers and play with all the different brands.
Drive it before you buy it.
And have fun..
Rick


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