Quote Originally Posted by cray View Post
I have read on another site that some of the Navonics charts up until 2008 had much better stuff on them like bridges and road beds that the newer ones don't have. Better definition of drops and channels. Something about proprietary mapping they had bought from other company's that contract ran out on them being able to use.
This is true.....They changed their basemap provider ...... I think in 2009, so the 2008 would be the last one with a lot of features that the newer ones don't necessarily have.
There is a BIG difference in some lakes......Those old features are worth as much as the depth contours in my opinion.

I have a 2008 chip (E4) for that reason.