First, I'm not so sure the video in reference shouldn't be taken with a grain of salt. As for the cv ducer on the Garmin, most folks that have posted here and other sites seem to think they are up to the task if you are less than a certain depth. Say 30 feet or so. Particularly those that have and use both. HB's core units have used blended for a good while. Rickie just posted a few days back about which ones still do. I can't remember tho. I do agree to get as large a screen as is possible/affordable regardless of brand. Probably gonna be some pretty slick stuff showing up soon with the releases. Prices will probably come down on some things out now that you are looking at.

I have both sv and chirp on TM. I'm happy. HB has some neat stuff. Good luck in your quest