As of reviews from 2016 .... #1 is a HB Helix 7 & #2 is a Lowrance Hook 7 .... but, that could have changed over the last two years, because of technological advances in all the major brands.

You'd also have to take into account screen size, price (if that matters), pixel count, and ease of use of the different functions on the different brands and models of those brands.

It's like a Chevy - Ford debate ... satisfied owners of either brand are going to stick up for that brand, so expect the same from depth finder owners.