So here is some fun info that I posted on Texas Fishing Forum! Im sure some already knew about this technology but it was new to my eyes Major players in the Marine Electronics industry for Bass Fisherman (there are plenty of others in saltwater, commercial, etc.):1. Navico- which encompasses Lowrance, Eagle, and Simrad Yachting, Simrad had the HD structure scan and chirp Sonar technology, which Lowrance uses as well Coming Soon from Lowrance 2. Johnson Outdoors- Humminbird and Minn Kota (Ion is the only graph which has chirp sonar, dont know if they will release a module for their SI and DI units or not for chirp/ HD digital sonar) Is Humminbird going to offer HD modules or chirp sonar in the future?3. Garmin- uses chirp sonar with modules New Garmin 2014 also info about – Chirp Sonar 4. Ray Marine- part of Flir Systems ( thermal imaging, imaging technology) also offers chirp sonar technology, the Dragon Fly looks pretty coolJust thought I would share, I didnt know much about modules, chirp sonar and HD until I did some research. Im sure I missed something!