Best affordable ($100-275) GPS Receiver?

My wife is getting ready to visit her folks in North Carolina, and we live in Florida.

Although we have driven there a few times, my wife gets very worried/frustrated when she doesn't know right where we are on the map, and I won't be in the car to keep her confident.

I'm thinking of buying a Tom Tom One, because the reviews seem to be pretty positive for the upper end of my price range.

I want something that will show her where she is, and where she is going easily, and talk the directions out (she's not great with maps)

Even though she is going to mountain-ville NC, I'm not worried about her getting lost once she gets pretty close, so if the maps aren't terrific, it's no big deal, her parents live off of a highway.

She just needs to know that she hasn't missed her exit, and that sort of thing.