Dan,
I travel a fair bit for work and use my 296 a LOT in the rental cars, as well as my own car.

In my view it is fantastic!!! I have the auto kit with the external speaker and it gives turn by turn instructions over the speaker. I use "City Select" maps that came with it. I find that it does a very good gob, with plenty of notice before turns. I also drive a lot of new cars as part of my job that have navigation systems built in them. I think my 296 on top of the dash does just about as good of a job as the built in ones. In fact I like it even better because I can move it from car to car and it also shows me all the aviation info that I like.

Dale - Arizona