i have the entel, its got propper wet, been abused, and is well loud and still works.
during cowes week i left it on overnite in the bottom of a boat, and there was still enough power to put out a pan pan 24 hours later. that was wot well impressed me about the unit.
the entel also has a button of which you can program to the most used chanells so you can acces them easily.
i have also used the m1eurov, but it is definately not as loud, and to be honest, i get confused by all the tri dual watch etc.