I have both a Humminbird Onix 10 SI Touch and a Helix 12 Gen 2 Mega Scan on my boat. While on the lake the other day doing a little scanning, I decided to compare the two of them to see which had the best image. I personally think my Onix has the better image, well at least after many software updates that Humminbird released. My Onix had a good image until one of the earlier update releases but after I did the update the images were horrible on my Onix. Finally, after about four or five updates and trips back to Humminbird I finally got the images correct and I will not update my Onix again! By the way my version of software on my Humminbird Onix is 3.230 and the software version on my Humminbird Helix 12 Gen2 is 2.110.
Anyway, back to the comparison of the two units. The images I recorded and the images below are from the two units with both the side image and the down image views. The recording were converted in the Reef Master software (search for a blog I did on this software to find out more information) and then I did a screen capture of both the unit recordings.
The first image posted below is from my Onix unit and the second image is from my Helix 12 Gen2 Mega Scan. One note is that when I run my Onix I use the 455 kHz setting for the side image and the 800 kHz setting for my down image views. On my Helix I used the highest Mega scan setting which was 1150 kHz to 1250 kHz. Take a look at the images below and I’ll let you decide which unit has the clearer images.