Inexpensive and Configurable. I am sure that newer GPS will have more bells and whistles, but this was pretty good when I purchased it.
Device rating - Cons:
Battery lost all its charging capabilities within a couple of years. The GPS has to be attached to a power source.
It takes a tremendous amount of time (4+ minutes) to calcuate a route starting from a cold boot. But, once it is on, then it is able to recalculate easily.