Does the new Chirp technology provide you with a better bottom picture?
My Raymarine eS128 has chirp but all it shows is the bottom contour, no structure, etc. I have been told by the dealer that sold the unit to me that Chirp is not good in salt water but is excellent in fresh water. I'm having a hard time believing this as it was not mentioned at the time of purchase.
As was previously mentioned, the picture doesn't even come close to the published ads.