Lowrance and HB are all I have. HDS's are nice. I have a Helix 7 / HB 998c and would rather have a Helix 10 or 12 in mega image SI/ DI combo. My HDS7 is old but really shows a good picture of what's there with the structure scan. If I could, I would go with HB Mega image in 10 or 12" But I been holding out for a HDS12 and talking my self out of it every time. I just need to upgrade and be happy with bigger screens. Good luck on what ever you choose!