I agree. Its common "wisdoM" now to trash in-car nav systems as a big waste of money when you can just use your phone or a garmin. But, I find that when I most NEED navigation (dark and rainy nihgt and I'm lost) the portable options show their weaknesses very fast. When you most need them, they'll have falled off the windshield or not be able to acquire a sat lock. They're fine when you're just using them to track progress. For my next car, i've vowed to get an in-car system. When leasing, the per month additional cost isn't so bad.