I agree the factory nav is not as intitive as I'd like, but man, the onstar nav is fantastic. I've called a couple of times as traffic either came to a stop, or I knew of a long road closure,and the onstar nav person knew of the problem, asked if I was towing, once I answered within 15-30 seconds they had a new route downloaded around the accident and we were on our way. In one case, I was towing, and any nav system other than my garmin RV760 for bypassing it if you were towing would likely have sent me on a route I would NOT wanted to be on towing.
I also like the messaging for turns etc. better on the GM nav than my garmin. If there are multiple possible turns in a short distance, rather than waiting till the last second to say "turn", GM nav will say as an example "Turn right at the third intersection" then chime at the turn. It also is better than my garmin on saying which lanes you can be in.
But, as BO mentioned, entering a destination is probably it's biggest dissapointment to me.
Rather than try to enter addresses, I just use the onstar blue button and have a real person pn the line do my work for me!
