As of 2015, The Lowrance HDS-9 Gen2, Lowrance HDS-12 Gen3, Garmin Echo 551dv Worldwide and Lowrance Elite 3x all receive excellent reviews on Amazon.com within a wide price range. The low-priced Lowrance Elite 3x comes in at less than $100 and has a 4-star rating across 140 reviews.
At the more expensive end, the Lowrance HDS-12 Gen3 is currently priced at more than $3,000. One reviewer notes that the touch screen works with wet hands, it never smudges, and it can be seen in all lighting.
The HDS-9 Gen2, which is currently priced at $1699, has a smaller screen than the HDS-12. One reviewer extolled the easy-to-use interface. The Garmin Echo 551dv is more reasonably priced with a current price tag under $300. It has a 4.5 star rating on Amazon from more than 80 reviews.