The HELIX 5 CHIRP SI GPS G2 is one of the newest models from Humminbird for 2017. It comes with quite a few improvements over the older HELIX 5 SI GPS. The major differences are the CHIRP sonar technology and the AutoChart Live capability. The system packs quite an impressive array of fish finding functions. To begin with, it has three types of sonar: CHIRP DualBeam Plus, … [Read more...] about Humminbird Fish Finder HELIX 5 CHIRP SI GPS G2 Review