I just received my Raytheon 420
I just received my Raytheon 420 Chartplotter. I also have a hunter 30 and I sail out of Jamaica Bay, just a bit west of you. I went to the boat show in Atlantic City in January and spent a lot of time at the different manufacturers booths. Garmin wasn't there, but Standard was. I liked the display on the Raytheon, which is why I selected it. One of the differences that you may want to look at is the tyhpe of chip used. Garmin uses it's variation of the Navionics chips. Standard and even some of the Raytheon units, use CMap. I got the unit, chip for the south shore of long island and a Edson pedestal mounting bracket for less than $900 total. If you want more info, my email address is gmenchini@stfranciscollege.edu. I haven't event installed the unit yet, so my real experience with this is limited, but I will share whatever I know or don't know with you, if it helps.