I'm scared my self. I keep hearing about close out sales on the 98' units since the 99,s units are coming out but i haven't find a good deal yet from a respectful dealer. I hear they going to discontinue all 98 models. I don't think the 99 units are going to be same. They come with internal gps but only come with 455 khz. Im trying to find out for sure before i purchase anotherdam unit.