I just recently installled two LMS-332c's on my boat (one at the bow and one at the console)with the new Lowrance networking system. I bought the "Hot Spots) EAST mapping chip and I really like it. All of the contour lines and detail is great and it zooms in to .03 of a mile. I highly recommend it and you can order it on-line from Lowrance for $99.99 + shipping! Good luck!!