I use it and yes although sometimes it can be sketchy, I have found that it saves me a lot of time. I also check ahead of my route before I commute, and it helps. I've had my unit for over 2 years now and in the beginning I hated it. But I have noticed that they improved over the past 2 years, and as more cameras go up, they should continue to improve. But eventually with all the new technologies, even this will become obsolete.
I heard Sirius is coming out with their own traffic thing. But instead of traffic cams and reports alone, it also receives driver info. For instance if I'm stuck i