MyFishFinder.com Just like iceshanty but warmer
I use a Lowrance Elite Ti2 and its the only one that lets you use 2 different cone angles on the same screen. The HIGH CHIRP is 8deg (i believe) and the 83kHz is 140deg (i believe).
I'm admittedly a garmin guy. I highly recommend the garmin echomap series. One of the great things about them is not only can you buy ice packs or boat transducer Garmin uses a cradle for the head unit. You can unclip the head unit from the cradle and instantly transfer them from boat to ATV/UTV/snowmobile etc to ice pack. I have mine set up so I have my ice fishing unit that I have in my storage box on my UTV and a cradle mounted on the dash. I snap out the head unit and transfer it back and forth as needed. It's the slickest system.