Hi TEH. I just recently got a Cobra Marine HH 330. Works really well. Floats and ive given it my best shot at trying to drown it in the tramp pocket. Good price too. The next model up you can blue tooth it to your phone which is pretty cool too. You can make phone calls using the radio as a Handset while your phone is somewhere dry.

The ones we use on the rescue boats at our club seem to give us a bit of trouble but i cant remember the brand.

Anyone doing any sailing alone really has to have one. So easy to throw on the boat.