I have a set. gps works great, unit takes a lot to of time to set up, too many bells and whistles with it. Some people say the reception is not that great with the radio's, as for me i have not had a problem with them. like the fact that you can send your positions to each other and when used with a map, makes it easy to locate each person. Not sure what you have in mind for usage of the gps, but there are easier units to use out there.