I am looking for the ability to input multiple destinations, or stops, or POI's before I leave.
What is the least expensive model that has that ability?
You'll need to help us a bit more, exactly what are you asking ... is this to be used on foot? In a car? And what do you want to do with these multiple destinations that you want to input?
Note this really is the wrong forum (I suspect) for this type of query. You'd be better off trying here http://forums.gpsreview.net/