I have some gripes with the factory nav too. However, I think the BMW 2010 nav is no worse than other factory nav's that I've had. In my Infiniti nav system, it also didn't have text-to-speech. And, the routing wasn't great. However, many of the features in the BMW nav is much better than the Infiniti nav.

Of course, compared to my two Garmin units, I don't think any factory nav will compare. I think most "experts" will say the same for any factory nav out there.

The biggest gripe that I have though (similar to my Infiniti nav) is that the BMW nav screen doesn't display the name of the next street/exit that you will be turning on.