I've only had my A65 for about a month, but I love it. I can't speak to durability yet, but it is pretty easy to install, gives me all I need to know about where I am and whats under the boat at a glance. I got the package with the DSM 25, and the Navionics Silver chart. The sounder will pick up a 6 oz diamond jig in 35', shows up well in sunlight (except when using polarized glasses and you are at a really sharp angle- but what does). From the helm it's easy to see and interpret. I had been using a Monochromatic Garmin76 Map handheld and a Humminbird Wide 3D previously and I have to say, this setup makes me feel alot safer and more efficient on the water. Now I can concentrate on the water and not have my head buried in a little handhelds screen. It is so much easier to get your bearings by glancing at the chart on screen look up to verify your bearings, than to pore over a paper chart and try to corrolate that to what a little handheld shows. I find that the screen is big enough to split and still get a decent view on each of the displays. Some of the smaller units, when split, made for too small an image for me to read easily, even in the store! I find the keys user friendly- but so different from my garmin that I had to retrain myself on how to access the basics. (I had hit the MOB to mark a fishspot and didn't realize I held it too long and it activated the MOB alarm- which was a pain til I read the book and realized I should've given it two quick taps instead... ) The p58 'ducer works on my 17CC up to about 22kts- then I begin to lose bottom, but I haven't "tweaked" that installation - I just used the holes from the previous 'ducer and got it in the ballpark. So far, I am very pleased. (My girlfriend was a little disappointed that it doesn't show the little cute "cartoon" fish symbols, but rather it shows blobs of color...hehehe) Good Luck, Jim